Isabel Dress

Derek Lam 10 Crosby

4
(30 Reviews)

Product Details

Slip into the Derek Lam 10 Crosby Isabel Dress—a refined fit-and-flare that delivers effortless polish with subtle gathering and a flattering silhouette. Pair it with strappy sandals and a bold cuff for a look that moves seamlessly from afternoon brunch to evening cocktails.

Materials and Measurements

Black (95% Polyester, 5% Spandex). Casual Dress. V-Neck. Sleeveless. Pull on. Shoulder to hemline length: 51.5". Imported.

Size and Fit

Sized: XS-XL

The model is wearing a size small.

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Ratings &
Reviews

  (30)  

Includes written reviews and customer fit feedback.

Fit
Runs Small
True to Size
Runs Large

All Photos

Top Contributor
Size worn:
L
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 12
Height: 5' 8"
Bust size: 36DDD/E
Body type: Athletic
Weight: 190lbs
Browse Annie's reviews
July 10th, 2025
Super flattering

Even on a 7 month pregnant person :) loved the stretchy fit.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Date
Usually wears: 8
Height: 5' 10"
Bust size: 34C
Body type: Hourglass
Weight: 165lbs
Browse Claire 's reviews
October 24th, 2025
Great!!!!

Very flattering and great staple black dress. Looked good with a lot

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 3"
Bust size: 32C
Body type: Pear
Weight: 117lbs
Browse Sally's reviews
August 19th, 2025
Summer witch

I love this one. The fabric has a lot of movement and walking feels dramatic.

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Usually wears: 2
Height: 5' 6"
Bust size: 34A
Body type: Athletic
Weight: 120lbs
Browse Madailein's reviews
July 9th, 2025
Very good basic black dress

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Work
Usually wears: 4
Height: 5' 8"
Bust size: 32C
Body type: Straight & narrow
Weight: 132lbs
Browse Katie's reviews
June 2nd, 2025
Comfortable elegant work or party dress

I wore this dress on the fourth day of a work conference, it was comfortable and elegant and moved beautifully when I walked. I got multiple compliments and one woman said I even had a “coastal vibe” which may have been the shoes I chose. I wore a small, but because it is so stretchy, the XS would have also worked great

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Work
Usually wears: 4
Height: 5' 6"
Bust size: 34C
Body type: Athletic
Weight: 135lbs
Browse Olivia's reviews
September 9th, 2025
Long, but super comfortable

Wore this with my jean vest. It was long but very stretchy and comfortable. The vest was because i wore it to work, and the neckline is low. Super flattering for your figure. Gives that hourglass shape.

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Date
Usually wears: 4
Height: 5' 4"
Bust size: 34C
Body type: Athletic
Weight: 125lbs
Browse Annie's reviews
September 9th, 2025
Just OK

Fit well but nothing special. Didn’t love material. Bought it for a birthday dinner and it wasn’t right for that - ended up just wearing it on a date night

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Rented for:
Date
Usually wears: 2
Height: 5' 11"
Bust size: 32B
Body type: Pear
Weight: 145lbs
Browse Elsa's reviews
October 23rd, 2025
Such a versatile dress

Second time renting this. Fabric drapes beautifully and is super flattering. Runs a tad large because it's very stretchy. I'm very small-chested and felt this was conservative enough for work. That might be different if you're curvier, only because the neckline is fairly generous.

Top Contributor
Size worn:
S
Usually wears: 6
Height: 5' 3"
Bust size: 34DD
Body type: Hourglass
Weight: 140lbs
Browse Gina's reviews
September 9th, 2025
Flattering

This is a simple dress, but it has a real WOW factor. Very flattering and comfortable. The neckline hit in the right place and it has some stretch.

Top Contributor
Size worn:
L
Usually wears: 12
Height: 5' 8"
Bust size: 34B
Body type: Pear
Weight: 175lbs
Browse Ann's reviews
September 7th, 2025
Comfortable throw on and go dress

Loved how easy this dress is--a little stretch makes it easy to slide on. Could feel really dressy with elegant heels, but I wore it with sneakers.

Top Contributor
Size worn:
L
Overall fit:
True to Size
Rented for:
Party
Usually wears: 12
Height: 5' 9"
Bust size: 36C
Body type: Athletic
Weight: 185lbs
Browse Jessica 's reviews
August 18th, 2025
Easiest way in the world to look glam fast

Loved this LBD

Top Contributor
Size worn:
L
Overall fit:
True to Size
Rented for:
Date
Usually wears: 10
Height: 5' 3"
Bust size: 36D
Body type: Apple
Weight: 152lbs
Browse Veronica's reviews
August 12th, 2025
So comfortable and flattering

This is nice enough to wear to a nice dinner, but still incredibly comfortable for waking around. Bought it because I know I’ll wear it often.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Usually wears: 4
Height: 5' 3"
Bust size: 34D
Body type: Athletic
Weight: 135lbs
Browse Chessa's reviews
July 11th, 2025
24 weeks pregnant

I wore this for a work meeting 24 weeks pregnant and loved it! It's light, stretchy, and comfortable in these summer days. I paired it with a tan linen blazer, and a thin brown belt to show off the bump.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Date
Usually wears: 8
Height: 5' 4"
Bust size: 36DD
Body type: Hourglass
Weight: 155lbs
Browse Kim's reviews
June 20th, 2025
Great dress!

Loved this dress! It’s simple but stylish, and accentuates your curves.

Top Contributor
Size worn:
XS
Usually wears: 2
Height: 5' 7"
Bust size: 32D
Body type: Athletic
Weight: 130lbs
Browse Nicolle's reviews
September 8th, 2025
Witchy

Liked a lot

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Other
Usually wears: 6
Height: 5' 1"
Bust size: 40B
Body type: Hourglass
Weight: 124lbs
Browse Linda's reviews
July 26th, 2025
Might get it again

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Date
Usually wears: 4
Height: 5' 9"
Bust size: 28DD
Body type: Athletic
Weight: 130lbs
Browse Veronica 's reviews
June 28th, 2025
Perfect fitting black summer dress

Top Contributor
Size worn:
L
Usually wears: 10
Height: 5' 5"
Body type: Apple
Weight: 160lbs
Browse Robyn 's reviews
June 13th, 2025
Very comfortable

Top Contributor
Size worn:
L
Overall fit:
Large
Rented for:
Other
Usually wears: 10
Height: 5' 6"
Bust size: 34DDD/E
Body type: Apple
Weight: 150lbs
Browse Gretchen 's reviews
September 14th, 2025
Too large in the waist

A very nice dress but there was too much material around the waist area for me (which is usually a problem area). It was not flattering and I did not wear it.

Size worn:
M
Overall fit:
True to Size
Rented for:
Formal Affair
Usually wears: 10
Height: 5' 2"
Body type: Full Bust
Browse Patty's reviews
August 31st, 2025
Nice dress

But I didn’t get to wear it out

Top Contributor
Size worn:
L
Overall fit:
True to Size
Usually wears: 12
Height: 5' 10"
Bust size: 36DDD/E
Body type: Full Bust
Browse Lauri's reviews
June 22nd, 2025
Nice dress

Top Contributor
Size worn:
L
Overall fit:
True to Size
Rented for:
Date
Usually wears: 10
Height: 5' 5"
Bust size: 36DDD/E
Body type: Full Bust
Weight: 140lbs
Browse Amy's reviews
June 10th, 2025
Slinky Silhouette

This dress has a very slinky, fluid quality to it that makes it flattering on the body. The way the fabric drapes and moves creates a smooth silhouette, gently hugging the figure in a way that shapes without clinging too tightly. It mostly conceals small bumps or uneven areas around the midsection it offers a bit of forgiveness while still maintaining a tailored, body-conscious fit. Visually, the overall effect of the dress leans toward a more polished, almost formal look. However, because the material is polyester, it doesn’t feel overly delicate or fussy. Instead, it strikes a versatile balance—you could easily dress it up with heels and accessories for an evening event or wear it more casually with flats or a blazer for a daytime outing or dinner. It’s not showy or flamboyant, which adds to its adaptability. The design is subtly elegant, with enough structure to feel sophisticated but enough give to make it comfortable and wearable across different settings.

Top Contributor
Size worn:
S
Overall fit:
Large
Usually wears: 4
Height: 5' 6"
Bust size: 32DDD/E
Body type: Athletic
Weight: 120lbs
Browse Ann's reviews
May 31st, 2025
Runs big

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Work
Usually wears: 8
Height: 5' 5"
Bust size: 38C
Body type: Hourglass
Weight: 155lbs
Browse Valerie 's reviews
October 10th, 2025
Just ok

Thin silky material. Didn’t find the cut to me flattering

Top Contributor
Size worn:
L
Usually wears: 10
Height: 5' 7"
Bust size: 32H
Body type: Full Bust
Weight: 168lbs
Browse Vicky's reviews
September 11th, 2025
Flattering tea length gown

I wore this out for dinner one evening. I'd say it even runs a little large. The cut is flattering, but it's not a very exciting dress.

Top Contributor
Size worn:
M
Usually wears: 8
Height: 5' 5"
Bust size: 36DD
Body type: Apple
Weight: 147lbs
Browse Ann's reviews
August 30th, 2025
It's pretty basic.

Not forgiving on anything but a flat tummy.

Top Contributor
Size worn:
S
Overall fit:
True to Size
Usually wears: 4
Height: 5' 4"
Bust size: 34C
Body type: Hourglass
Browse Alicia's reviews
July 18th, 2025
Meh

I wanted work maxi but got chic funeral

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 8
Height: 5' 5"
Bust size: 36D
Body type: Hourglass
Weight: 160lbs
Browse Mea's reviews
July 9th, 2025
Fine?

The picture is cuter than the dress on the body. There’s little shape and it’s boring. Fine for running errands when I didn’t care but not worth your swap

Top Contributor
Size worn:
S
Overall fit:
Large
Rented for:
Other
Usually wears: 4
Height: 5' 9"
Bust size: 34D
Body type: Hourglass
Browse Katie's reviews
September 4th, 2025
Hated it

I thought this would be a versatile item I could wear for date night and the office. It ended up being neither - too matronly for date night, and too formal for the office. I also found it to be quite loose fitting in a way that was not flattering

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Other
Usually wears: 8
Height: 5' 4"
Bust size: 36C
Body type: Athletic
Weight: 127lbs
Browse Lori's reviews
August 19th, 2025
Fabric feels heavy and fits very long.

Dressier than RTR photos show.

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