Blue Tie Waist Romper

Derek Lam 10 Crosby x RTR

4
(144 Reviews)

Product Details

This crisp blue sleeveless romper by Derek Lam Collective exudes a relaxed yet sophisticated vibe with its v-neckline and tie-waist detail. Pair it with tailored shorts for a chic summer ensemble.

This style may require additional, at-home steaming.

Materials and Measurements

Blue cotton (98% Cotton, 2% Spandex). Romper. Sleeveless. V-neck. Front zipper fly with button closure. 32.5" from shoulder to hemline. 3" inseam. 14" rise. 29" leg opening. Imported.

Size and Fit

Sized: 36-52

Models are 5'10 and wearing a size 40 and 48. 

Pockets are functional | Attached belt | Petite friendly | Elastic waist | Standard bra friendly | Light weight | Front zipper | Comfortable fit | True to size

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Ratings &
Reviews

  (144)  

Includes written reviews and customer fit feedback.

Fit
Runs Small
True to Size
Runs Large

All Photos

Top Contributor
Size worn:
38
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 3"
Bust size: 34C
Body type: Petite
Weight: 125lbs
Browse Dana's reviews
August 30th, 2025
10/10 item

Absolutely loved this item. It’s true to size, extremely comfortable, has pockets, perfect outfit.

Top Contributor
Size worn:
36
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 0
Height: 5' 6"
Body type: Athletic
Weight: 117lbs
Browse Alice's reviews
August 8th, 2024
Super cute!

Loved this jumper. Easy to wear around town while being comfortable and put together.

Top Contributor
Size worn:
38
Overall fit:
Small
Rented for:
Vacation
Usually wears: 4
Height: 5' 6"
Bust size: 34DD
Body type: Hourglass
Weight: 127lbs
Browse Michelle 's reviews
June 26th, 2024
I would buy this one if price gets right!

I think I should’ve sized up. It was a little short in torso for me and a little tight in bust. I tend to have that problem on jumpers. But super cute!!

Team RTR
Size worn:
46
Overall fit:
True to Size
Rented for:
Party
Usually wears: 10
Height: 5' 2"
Bust size: 30C
Body type: Pear
Weight: 165lbs
Browse Courtney's reviews
May 14th, 2024
Team RTR Review

I loved this classic romper by Derek Lam! In my opinion, it runs true to size with a little stretch. I recommend renting your normal size. This style is fitted, and tied in the midsection, while being flowy and looser at the hips. It works best for smaller chests as the top area is quite small and fitted. At 5'1, the length was just right on me. The color is perfect for spring and summer. I wore it during a lake day! Pair with cute sandals, or sneakers for a fun outfit to wear during daytime activities!

Top Contributor
Size worn:
38
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 3"
Bust size: 32C
Body type: Petite
Weight: 105lbs
Browse Danitza's reviews
April 19th, 2024
"Team RTR Review"

This very light blue color romper is perfect for a casual date or for everyday. It runs true to size, and it fits perfectly for me. I'm petite and the length was great. It can feel a little stiff by the collard when you first try it on, but it's very comfy! It's perfect to wear with flats or sandals.

Team RTR
Size worn:
52
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 16
Height: 5' 4"
Bust size: 38C
Body type: Hourglass
Weight: 220lbs
Browse Kearstin's reviews
April 14th, 2024
Team RTR Review

This romper was so light and flowy! This romper fit perfectly and is the perfect outfit to pair with some sandals and wear to the beach or a picnic.

Top Contributor
Size worn:
48
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 10
Height: 5' 5"
Bust size: 36D
Body type: Hourglass
Weight: 160lbs
Browse Jane's reviews
September 11th, 2025
Flattering for curves

I wore this several times on vacation. It’s easy to get on and off. The top was big enough for chesty girls - provided full coverage and didn’t pull apart. Would rent this one again.

Top Contributor
Size worn:
44
Overall fit:
True to Size
Rented for:
Date
Usually wears: 8
Height: 5' 2"
Body type: Petite
Weight: 153lbs
Browse Sarah's reviews
August 27th, 2025
Perfect for casual date/concert + more

Loved this outfit and wore it a few different times for different occasions. This did require some clothing tape to keep it in place and not flash anyone! Would also work well with a banded bra. It was perfect for wearing to an outdoor concert at an amphitheater. I didn’t feel too dressed up but still felt hot (in a good way!) it showed off the curves!

Top Contributor
Size worn:
42
Overall fit:
True to Size
Rented for:
Date
Usually wears: 10
Height: 5' 1"
Body type: Petite
Weight: 145lbs
Browse Sarah's reviews
August 23rd, 2025
LOVED!

Super cute but is intense to put in a few clips and zippers and a button! Would rent for being outside wore to a cubs game!

Top Contributor
Size worn:
40
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 4"
Bust size: 34C
Body type: Athletic
Weight: 140lbs
Browse Lauren's reviews
August 19th, 2025
Comfortable and flattering

Cutest fit for sightseeing or a night out!

Top Contributor
Size worn:
40
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 2"
Bust size: 36C
Body type: Hourglass
Weight: 123lbs
Browse Caroline's reviews
August 3rd, 2025
Perfect fit!

Really loved the fit of this. Excellent thick material. Have also rented it in green. Considering buying it!

Top Contributor
Size worn:
44
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 8"
Bust size: 36C
Body type: Athletic
Weight: 150lbs
Browse Connie's reviews
July 25th, 2025
Fun look to dress up or down

Fit comfortably with stretch waist, denim material made it a great look with cowboy boots or strappy sandals. The color is more of a light blue.

Top Contributor
Size worn:
40
Overall fit:
True to Size
Rented for:
Other
Usually wears: 4
Height: 5' 10"
Bust size: 34A
Body type: Athletic
Weight: 135lbs
Browse Christina baum's reviews
June 25th, 2025
Cute, high quality

Lots of compliments with this one! I'm tall (with a shorter torso) and it just barely fit right. I think if the torso was any shorter, I'd be getting a wedgie. The stretchy waist cinched pretty snuggly. The shorts length was nice. Overall great pick. You can easily iron out the wrinkles

Top Contributor
Size worn:
36
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 6"
Bust size: 32B
Body type: Pear
Weight: 115lbs
Browse Alex's reviews
June 2nd, 2025
Very cute and great for casual summer

Almost too short in torso though, be careful if your torso is long

Top Contributor
Size worn:
38
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 5"
Body type: Hourglass
Weight: 122lbs
Browse Ann ivey's reviews
May 29th, 2025
Loved this!

I wore this romper walking around all day and it was very comfortable and cute!

Top Contributor
Size worn:
38
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 2
Height: 5' 6"
Bust size: 34B
Body type: Athletic
Weight: 122lbs
Browse Desi's reviews
July 14th, 2024
ITALY APPROVED!

i rented the green color for a mexico vacation earlier this year, and wore this one on vacation a LOT! this is just a great romper! RENT IT.

Top Contributor
Size worn:
44
Overall fit:
True to Size
Rented for:
Other
Usually wears: 6
Height: 5' 11"
Bust size: 34D
Body type: Straight & narrow
Weight: 160lbs
Browse Ava's reviews
May 27th, 2024
Great for tall girls!

I’m super tall and this was super flattering and fit me so well!

Team RTR
Size worn:
40
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 5"
Bust size: 34C
Body type: Straight & narrow
Weight: 125lbs
Browse Stephanie's reviews
May 22nd, 2024
Team RTR Review

I am obsessed with this light blue color! This romper has internal buttons and attached tie waist belt that keeps everything all together and prevents gaping! It is standard bra friendly and has pockets!! The romper runs pretty true to size but I would recommend sizing up if you are in between sizes.

Top Contributor
Size worn:
38
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 7"
Bust size: 32B
Body type: Athletic
Weight: 135lbs
Browse Betsy's reviews
May 14th, 2024
CUTE! So comfy! Adjustable waist!

This romper is ADORABLE! Cute light blue color, so comfy, great walking around day fit! I loved that there’s a button up top that closes the chest area. The length is short but not too short. I wore it walking around in Nashville. Super comfy and high quality material!

Team RTR
Size worn:
42
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 5"
Bust size: 34D
Body type: Hourglass
Weight: 160lbs
Browse Breana's reviews
April 27th, 2024
Team RTR Review

I truly enjoyed this blue tie waist romper by Derek Lam! It was a little tight around the mid-section where it clasps, but still comfortable enough to wear. It does wrinkle up a lot as you’re wearing it throughout the day due to the material. I was worried about the bust section being too low, but there’s a button to close it up! Overall I enjoyed wearing this, paired it with some cute lace up heels for Sunday Funday brunch with the girls!

Top Contributor
Size worn:
38
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 4"
Bust size: 32B
Body type: Pear
Weight: 123lbs
Browse Anna's reviews
March 21st, 2024
Tight at first but then comfortable

I loved this! It’s tight in the waist when you first put it on but then feels comfortable when worn for a little bit. I walked & scootered around DC on a hot day for 6 miles in it and felt great :)

Top Contributor
Size worn:
36
Overall fit:
True to Size
Usually wears: 0
Height: 5' 3"
Body type: Petite
Weight: 118lbs
Browse Laura 's reviews
October 16th, 2025
Cute romper. Very short especially when you sit

Top Contributor
Size worn:
36
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 0
Height: 5' 2"
Body type: Petite
Weight: 110lbs
Browse Heather's reviews
September 14th, 2025
Cute everyday romper

Fit well. Nothing too special but it was pretty cute.

Top Contributor
Size worn:
40
Overall fit:
True to Size
Rented for:
Work
Usually wears: 6
Height: 5' 7"
Bust size: 34A
Body type: Athletic
Weight: 138lbs
Browse Natalie 's reviews
September 4th, 2025
Very flattering

Very cute and comfy. Also easy to get on and off.

Top Contributor
Size worn:
46
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 10
Height: 5' 5"
Body type: Apple
Weight: 164lbs
Browse Nisha 's reviews
July 4th, 2025
So comfy for summer

Light fabric for a hot day. A little snug in waist and complicated to get out of to go to bathroom

Top Contributor
Size worn:
46
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 8
Height: 5' 3"
Bust size: 36DD
Body type: Full Bust
Weight: 155lbs
Browse Chrissy's reviews
September 18th, 2024
Well constructed and flattering

I loved the structure of the neck and quality of the material/closures. I will say that if you are over a C cup you will need a body suite underneath if you want to be more conservative, and even though I’m short I have a longer torso and it was just borderline long enough to get on and off.

Top Contributor
Size worn:
44
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 4"
Bust size: 34A
Body type: Apple
Weight: 150lbs
Browse Katherine's reviews
June 28th, 2024
Comfortable summer romper

Overall this was good. The front is a bit gaping even with the concealed button but it was pretty cute and comfortable. Easy to get in and out of.

Top Contributor
Size worn:
36
Overall fit:
True to Size
Rented for:
Party
Usually wears: 0
Height: 5' 6"
Bust size: 32B
Body type: Petite
Weight: 105lbs
Browse Kelli's reviews
May 25th, 2024
Perfect fit!

I have rented several rompers and none have ever worked. I have a semi longer torso, and they have ended up being too short. I took a chance on this and I’m glad I did. I’m just shy of 5’6 and this fit perfectly. I didn’t feel like the shorts were too short or that it was riding up. My only complaint is that is wrinkles easily.

Team RTR
Size worn:
46
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 10
Height: 5' 5"
Bust size: 36C
Body type: Hourglass
Weight: 144lbs
Browse Christina's reviews
April 21st, 2024
Team RTR Review

I liked this romper! It runs true to size. The material is a bit stiff and when you sit down the material in the chest area separates a bit. It would be good if there was an inside button higher up to prevent it from opening. It would be a good idea to wear a camisole tank underneath due to this. Other than that it was a great outfit for the day!

Team RTR
Size worn:
36
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 0
Height: 5' 2"
Bust size: 34A
Body type: Petite
Weight: 115lbs
Browse Jessica's reviews
April 15th, 2024
Team RTR Review

This romper is timeless and easy to wear! The light blue color will suit anyone. It fits true to size, but the top might be better suited for someone with a fuller bust, it was large on me. The waistband felt tight when clasped, but there's a button that can be left undone. You can also go belt-free. The fabric is sturdy yet comfy, making it perfect for everyday wear.

Top Contributor
Size worn:
42
Overall fit:
Small
Rented for:
Everyday
Usually wears: 6
Height: 5' 6"
Bust size: 34DD
Body type: Athletic
Weight: 140lbs
Browse Lauren's reviews
May 5th, 2024
Too short

I sized up in this and it was still very snug in the waist. If you have a long torso, I do not recommend. Overall just meh

Top Contributor
Size worn:
40
Overall fit:
True to Size
Usually wears: 4
Height: 5' 2"
Bust size: 34D
Body type: Athletic
Weight: 140lbs
Browse Nataly's reviews
May 20th, 2025
Stretchy waist

A great hug fit but stiff fabric so it didn't show any unflattering rolls

Overall Fit

Just right

Top Contributor
Size worn:
40
Overall fit:
True to Size
Usually wears: 6
Height: 5' 5"
Bust size: 34D
Body type: Hourglass
Weight: 145lbs
Browse Kimberly 's reviews
May 19th, 2025
Comfy cute

The color is more blue than white. The waist has elastic so good for ladies with a curvy shape

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Just right

Waist

Just right

Hips

Just right

Length

Just right

Top Contributor
Size worn:
44
Overall fit:
True to Size
Usually wears: 6
Height: 5' 7"
Body type: Athletic
Weight: 148lbs
Browse Skye's reviews
May 7th, 2025
Several compliments received!

I wore this with a cute neck scarf for a pop of color and everyone loved it.

Overall Fit

Just right

Top Contributor
Size worn:
48
Overall fit:
True to Size
Usually wears: 10
Height: 5' 4"
Bust size: 36D
Body type: Pear
Weight: 160lbs
Browse Leah's reviews
March 29th, 2025
Cute for vacation

Wore this in the Bahamas and it was cute and comfortable. I felt like it ran true to size.

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Just right

Waist

Just right

Hips

Just right

Length

Just right

Top Contributor
Size worn:
46
Overall fit:
Large
Usually wears: 10
Height: 5' 5"
Weight: 158lbs
Browse Racquel's reviews
September 14th, 2024
Cute, Chic, Casual

Wore it on a cruise. Very comfortable to wear and stylish

Overall Fit

Runs big

Chest

Runs big

Waist

Runs big

Hips

Runs big

Length

Too Long

Top Contributor
Size worn:
40
Overall fit:
True to Size
Usually wears: 4
Height: 5' 4"
Weight: 123lbs
Browse Kerry's reviews
August 27th, 2024
Wore this to the OC Fair, super cute

Super cute romper except it's a pain when you have to pee like all rompers. It has a zipper, metal clasps and inside buttons that keep it in place though.

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Just right

Waist

Runs small

Hips

Just right

Length

Just right

Size worn:
52
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 14
Height: 5' 1"
Bust size: 40DDD/E
Body type: Full Bust
Weight: 201lbs
Browse Shalette's reviews
September 11th, 2025
I liked it!

It fit well and it had good cleavage coverage. Because this piece is versatile, you can dress it up or down. For it being a romper it was not terrible for bathroom trips.

Top Contributor
Size worn:
40
Overall fit:
True to Size
Usually wears: 4
Height: 5' 2"
Bust size: 32C
Body type: Petite
Weight: 125lbs
Browse Sarah's reviews
August 11th, 2025
Liked this one a lot

Really great for a hot day - waist was slight tight for me but was a flattering fit

Top Contributor
Size worn:
42
Overall fit:
Small
Usually wears: 6
Height: 5' 5"
Body type: Athletic
Weight: 136lbs
Browse Tabitha's reviews
August 8th, 2025
Really liked this

Cute casual look. The seam to the crotch was a little short.

See more reviews:
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