Arna Dress

Reformation

4
(62 Reviews)

Product Details

Puff sleeves and a tie neckline look whimsically romantic in this smock waist midi dress by Reformation.

This style may require additional, at-home steaming.

Materials and Measurements

White cotton blend (96% Organically Grown Cotton, 4% Spandex). A-line. Cap sleeves. Square neck. Imported.

Size and Fit

Sized: 0-12

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Ratings &
Reviews

  (62)  

Includes written reviews and customer fit feedback.

Fit
Runs Small
True to Size
Runs Large

All Photos

Top Contributor
Size worn:
4
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 6
Height: 5' 5"
Bust size: 36B
Body type: Straight & narrow
Weight: 145lbs
Browse Caroline's reviews
December 1st, 2023
Dreamy dress

Perfect for a vacation with warmer temperatures. I could have sized up to have more room in the bust but the adjustable string helped with that. Would definitely rent again!

Top Contributor
Size worn:
6
Overall fit:
True to Size
Usually wears: 4
Height: 5' 7"
Bust size: 34C
Body type: Straight & narrow
Weight: 125lbs
Browse Shreeya's reviews
May 9th, 2025
So flattering!

Overall Fit

Just right

Top Contributor
Size worn:
6
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 6' 0"
Bust size: 32B
Body type: Straight & narrow
Weight: 150lbs
Browse Lauren's reviews
March 30th, 2025
Love the fit of this

Top Contributor
Size worn:
10
Usually wears: 12
Height: 5' 6"
Bust size: 34C
Body type: Pear
Weight: 180lbs
Browse Rosie's reviews
August 20th, 2024
beautiful white dress

lined, comfortable-- surprising for Reformation tbh, because I usually feel that it is too small, but this was perfect. would definitely rent again-- considering purchase.

Top Contributor
Size worn:
6
Overall fit:
True to Size
Rented for:
Work
Usually wears: 6
Height: 5' 3"
Bust size: 32D
Body type: Hourglass
Browse Amanda's reviews
June 17th, 2024
So good

Really nice cotton that’s light and lined but not see through at all. Got so many compliments. Love the neckline 🐚

Top Contributor
Size worn:
8
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 8
Height: 5' 9"
Bust size: 34DDD/E
Body type: Hourglass
Weight: 150lbs
Browse Lenna's reviews
June 6th, 2024
Very comfortable

Perfect for a white night or beach .

Top Contributor
Size worn:
2
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 0
Height: 5' 6"
Bust size: 34B
Body type: Straight & narrow
Weight: 120lbs
Browse Alexandra's reviews
May 28th, 2024
A little big in chest

Comfortable dress and beautiful neckline. The top can be tightened but would look better on those who are not flat chested.

Top Contributor
Size worn:
0
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 0
Height: 5' 1"
Body type: Petite
Browse Marissa 's reviews
August 28th, 2023
TTS to slightly small

Took my true size but it runs on the smaller side. No pockets but fully lined. Nice, simple white dress.

Top Contributor
Size worn:
6
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 4"
Bust size: 34C
Body type: Pear
Weight: 128lbs
Browse Stacey's reviews
July 26th, 2023
Looks so cute and mostly comfortable

I love how this looks on me for an everyday look. I sized up to a 6 (normally a 4/6) and I think it was the right choice. The waist and body fit perfectly. The sleeves were a little loose and I didn’t feel super supported in the chest but it was definitely doable. I love that the whole dress is double lined. I went braless with sticky cups. The elastic on the sleeves is a little uncomfortable under my armpits but overall glad I rented this.

Top Contributor
Size worn:
2
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 0
Height: 5' 2"
Bust size: 34AA
Body type: Petite
Weight: 115lbs
Browse Lindsay's reviews
July 8th, 2025
Beware itty bitty committee, gapes in the chest

Rented for July 4th and ended up wearing a sweater tied around my neck all day because it gaped so aggressively in the chest and I was worried about a slip. If you’re smaller in the chest like me, beware!

Top Contributor
Size worn:
12
Overall fit:
Large
Usually wears: 12
Height: 5' 5"
Bust size: 38G
Body type: Hourglass
Weight: 178lbs
Browse Tiffany's reviews
May 18th, 2025
Too big on top

The dress was cute but was too big on top so I did not wear it.

Top Contributor
Size worn:
10
Overall fit:
Small
Usually wears: 8
Height: 5' 4"
Bust size: 36B
Body type: Athletic
Weight: 150lbs
Browse Michelle's reviews
June 6th, 2025
Engagement photos

This was my first reformation dress and I'm glad I sized up. High quality and lined. This dress was perfect for my engagement photos!

Overall Fit

Runs small

Chest

Just right

Arms & Shoulders

Just right

Waist

Just right

Hips

Just right

Length

Too Long

Top Contributor
Size worn:
4
Overall fit:
True to Size
Usually wears: 4
Height: 5' 8"
Bust size: 32D
Body type: Hourglass
Weight: 130lbs
Browse Danika's reviews
May 30th, 2025
Loved the fit

This was such a sweet dress... pretty and sexy, easy to dress up or down. Not much room for a bra.

Overall Fit

Just right

Top Contributor
Size worn:
0
Overall fit:
True to Size
Usually wears: 0
Height: 5' 2"
Bust size: 32A
Weight: 105lbs
Browse Cynthia's reviews
October 23rd, 2024
Prairie Dreams

Loved wearing this dress! I wish I had more events to wear it to, but I wore it around the house just to wear it. The skirt is lined so you don't have to worry about anything showing through. As a smaller chested person, the bust was was a good fit because you can adjust and tighten the ties. It was a bit tight around my waist/ stomach but the scrunching on the back helps make it better

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Just right

Waist

Runs small

Hips

Just right

Length

Just right

Top Contributor
Size worn:
0
Overall fit:
True to Size
Rented for:
Date
Usually wears: 0
Height: 5' 9"
Body type: Hourglass
Weight: 120lbs
Browse Rebecca's reviews
August 27th, 2024
Brunch, girl's day out, daytime date

Such a lovely dress. Small chested girls will do well with it. The snug waist and relaxed hip is perfect.

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Just right

Waist

Just right

Hips

Just right

Length

Just right

Top Contributor
Size worn:
2
Overall fit:
True to Size
Usually wears: 0
Height: 5' 4"
Bust size: 32A
Body type: Straight & narrow
Weight: 108lbs
Browse RTR Member's reviews
August 20th, 2024
Great quality and fit

Could wear this dress over and over again. Classic

Overall Fit

Just right

Top Contributor
Size worn:
2
Overall fit:
Small
Usually wears: 0
Height: 5' 0"
Bust size: 32A
Body type: Petite
Weight: 108lbs
Browse Melissa's reviews
August 17th, 2024
lovely

Usually have to size down with Reformation and the 2 fit me well, especially considering that I have broader shoulders. The bust is adjustable so I was able to cinch it to flatter my smaller boobs. The length was matronly for my height but I used hem tape to shorten it.

Overall Fit

Runs small

Top Contributor
Size worn:
6
Overall fit:
Small
Rented for:
Date
Usually wears: 8
Height: 5' 5"
Bust size: 34D
Body type: Hourglass
Weight: 144lbs
Browse Rachel's reviews
June 23rd, 2025
Loved

I absolutely loved this dress, it was a little tight in the chest so would definitely go up a size !

Top Contributor
Size worn:
4
Overall fit:
True to Size
Rented for:
Wedding
Usually wears: 4
Height: 5' 5"
Bust size: 34C
Body type: Athletic
Weight: 140lbs
Browse Stephanie's reviews
April 16th, 2025
Stretchy, Durable, Not Slippy

Love Ref dresses, always reliable and true to size. This one was stretchy which was great, sleeves stay on just fine. I danced, i did a cartwheel, I did not get sweaty, I did not feel like my boobs were going to fall out, and I looked pretty cute. 10/10 chill family wedding reception dress.

Top Contributor
Size worn:
2
Overall fit:
Large
Rented for:
Everyday
Usually wears: 4
Height: 5' 4"
Bust size: 34B
Body type: Athletic
Weight: 125lbs
Browse Quinn's reviews
March 25th, 2025
Not meant for smaller boobs

Bust had too much material and didn't taper well

Top Contributor
Size worn:
8
Overall fit:
True to Size
Rented for:
Formal Affair
Usually wears: 4
Height: 5' 9"
Bust size: 34B
Body type: Straight & narrow
Browse Kelly's reviews
September 11th, 2024
Perfect for a baptism! Flattering but still conservative

Needed something white for my nephew’s baptism and I am his Godmother. This was perfect! Very demure, very respectful.

Top Contributor
Size worn:
0
Overall fit:
True to Size
Rented for:
Party
Usually wears: 2
Height: 5' 3"
Bust size: 32C
Body type: Athletic
Weight: 120lbs
Browse Julie's reviews
August 25th, 2024
Great simple white summer dress

A bit snug on top but otherwise fit well and comfortable

Team RTR
Size worn:
6
Overall fit:
True to Size
Usually wears: 4
Height: 5' 2"
Bust size: 34D
Body type: Athletic
Weight: 120lbs
Browse Alicia 's reviews
July 30th, 2024
Not great for petite

It’s a cute dress and good fit, but I didn’t want to wear it because the length is so awkward on me (I’m 5’2). It was too long/ the skirt tapered oddly on my stature.

Top Contributor
Size worn:
2
Overall fit:
Small
Usually wears: 2
Height: 5' 6"
Bust size: 32A
Body type: Pear
Weight: 133lbs
Browse Alexa's reviews
July 13th, 2024
Tight if you have big hips and small bust

Top Contributor
Size worn:
6
Overall fit:
True to Size
Rented for:
Date
Usually wears: 6
Height: 5' 7"
Bust size: 34C
Body type: Athletic
Weight: 136lbs
Browse Abigail's reviews
July 6th, 2024
Sexy summer dress

My date loved the dress and I felt very sexy in it. I wore a strapless bra to avoid any accidental slippage since the bodice is quite low cut. Would rent again! The material is a nice quality and not see-through.

Top Contributor
Size worn:
0
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 0
Height: 5' 5"
Bust size: 32A
Body type: Straight & narrow
Weight: 118lbs
Browse Freddie's reviews
November 2nd, 2023
Adorable

I love everything about this! Only issue is, the sleeves are a little tight

Top Contributor
Size worn:
2
Overall fit:
True to Size
Rented for:
Other
Usually wears: 0
Height: 5' 7"
Bust size: 34A
Body type: Pear
Weight: 115lbs
Browse Cozette's reviews
September 14th, 2023
A little thin but cute

Very cute but thin material

Top Contributor
Size worn:
0
Overall fit:
True to Size
Rented for:
Party
Usually wears: 0
Height: 5' 3"
Bust size: 32DD
Body type: Full Bust
Weight: 115lbs
Browse Lisa's reviews
August 25th, 2023
Love this dress

Enjoyed wearing this dress so much I actually purchased this dress from Reformation on sale. It can wrinkle but nothing a steamer can’t handle. The material breaths nicely.

Top Contributor
Size worn:
8
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 0"
Bust size: 34D
Body type: Hourglass
Weight: 140lbs
Browse Daisy's reviews
August 2nd, 2023
Super airy and casual dress

Perfect dress for a hot day. It’s super airy and comfy but cute at the same time. It runs a tad small but I would probably stick to my regular size.

Top Contributor
Size worn:
2
Overall fit:
True to Size
Rented for:
Party
Usually wears: 2
Height: 5' 7"
Bust size: 32D
Body type: Hourglass
Weight: 130lbs
Browse Cynthia's reviews
August 23rd, 2024
Elegant and casual summer dress

LOVED

Overall Fit

Just right

Top Contributor
Size worn:
4
Overall fit:
True to Size
Rented for:
Vacation
Usually wears: 6
Height: 5' 7"
Body type: Straight & narrow
Weight: 135lbs
Browse Anna's reviews
July 1st, 2025
Cute for vacation!

Cure for vacation and fits nicely

Size worn:
12
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 12
Height: 5' 4"
Body type: Full Bust
Browse Jennifer's reviews
August 10th, 2023
great

great

Top Contributor
Size worn:
4
Overall fit:
True to Size
Rented for:
Party
Usually wears: 4
Height: 5' 5"
Bust size: 32DD
Body type: Straight & narrow
Weight: 120lbs
Browse Amanda's reviews
November 11th, 2023
Wore to a dinner party

Makes you look put together without trying.

Size worn:
4
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 4"
Body type: Hourglass
Weight: 115lbs
Browse Brenna's reviews
September 26th, 2023
Cute

Fit great and thick material

Top Contributor
Size worn:
0
Overall fit:
True to Size
Rented for:
Date
Usually wears: 0
Height: 5' 4"
Bust size: 34A
Body type: Petite
Weight: 104lbs
Browse Megan's reviews
August 21st, 2023
good

good

Size worn:
2
Overall fit:
Small
Usually wears: 2
Height: 5' 2"
Bust size: 32D
Body type: Athletic
Weight: 126lbs
Browse Alina's reviews
September 26th, 2023
The skirt part is too narrow

Top Contributor
Size worn:
12
Overall fit:
True to Size
Usually wears: 12
Height: 5' 9"
Bust size: 36D
Body type: Athletic
Weight: 165lbs
Browse Karen's reviews
September 12th, 2023
Meh

Very drab. Too long and felt like I was a nurse. Didn’t wear.

Top Contributor
Size worn:
6
Overall fit:
True to Size
Usually wears: 4
Height: 5' 6"
Bust size: 34B
Body type: Straight & narrow
Weight: 145lbs
Browse Caroline's reviews
August 21st, 2023
Eh

Wasn’t my favorite. Looked really old fashioned

Top Contributor
Size worn:
2
Overall fit:
True to Size
Usually wears: 2
Height: 5' 4"
Bust size: 32B
Body type: Petite
Weight: 125lbs
Browse Natalie's reviews
June 9th, 2025
Liked it!

A classic dress, wore a few times, def runs small in the rib cage area.

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Just right

Waist

Runs small

Hips

Just right

Length

Just right

Top Contributor
Size worn:
2
Overall fit:
Large
Usually wears: 0
Height: 5' 2"
Bust size: 30C
Body type: Petite
Weight: 110lbs
Browse Tai's reviews
March 31st, 2025
Milkmaid Dress

Slightly large in the bust and material was stiffer than expected. Fun summer dress!

Overall Fit

Runs big

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