Top Picks
Cocktail Dress - A-Line: Black Solid Pattern Dresses - Used
ELLIE’S PICK THREDUPCocktail Dress - A-Line: Black Solid Pattern Dresses - Used
$22.99 THREDUP
Sophie Pearl Trim Sheer Dress
MAGGIE’S PICK W CONCEPTSophie Pearl Trim Sheer Dress
$402.00 W CONCEPT
Modest Layering Dress with 3/4 Sleeves and No Slits - Black / Medium
NADIA’S PICK KOSHER CASUALModest Layering Dress with 3/4 Sleeves and No Slits - Black / Medium
$34.90 KOSHER CASUAL
MERYL FASHION Womens A-Line Dress Black Striped Long Sleeve Knee Length UK
GEMMA’S PICK CERQULARMERYL FASHION Womens A-Line Dress Black Striped Long Sleeve Knee Length UK
$27.29 CERQULAR
BTFBM Casual Dress - A-Line: Black Solid Pattern Dresses - Used
ESME’S PICK THREDUPBTFBM Casual Dress - A-Line: Black Solid Pattern Dresses - Used
$14.99 THREDUP
How we pick

Quick word on how this list was made. Ellie, Maggie, Nadia, Gemma and Esme picked their favourites from the black knee length a line dress we found across loads of UK shops. No sponsored spots, no brand deals, just what they'd buy with their own money. We keep a mix of prices so there's something whether you're treating yourself or being sensible this month, and we limit how many come from one retailer. Stock and prices update regularly from each shop, so if something's gone, it's sold out rather than hidden.

We may earn a small commission if you buy through links on this page. It costs you nothing extra and helps keep the site running. How we make money

Under $5019 pieces
Cocktail Dress - A-Line: Black Solid Pattern Dresses - Used
THREDUP

Cocktail Dress - A-Line: Black Solid Pattern Dresses - Used

$22.99 THREDUP
BTFBM Casual Dress - A-Line: Black Solid Pattern Dresses - Used
THREDUP

BTFBM Casual Dress - A-Line: Black Solid Pattern Dresses - Used

$14.99 THREDUP
Zeagoo Womens Midi Dress Short Sleeve A
ZEAGOO

Zeagoo Womens Midi Dress Short Sleeve A

$39.07 ZEAGOO
Zeagoo Womens Casual Dress Square Neck Puff Sleeve Boho Dress
ZEAGOO

Zeagoo Womens Casual Dress Square Neck Puff Sleeve Boho Dress

$32.19 ZEAGOO
Just Fab Cocktail Dress - A-Line: Black Stars Pattern Dresses - Used
THREDUP

Just Fab Cocktail Dress - A-Line: Black Stars Pattern Dresses - Used

$26.99 THREDUP
PERCEPTIONS Womens A-Line Dress Black Crazy Pattern Long Sleeve Knee Length
CERQULAR

PERCEPTIONS Womens A-Line Dress Black Crazy Pattern Long Sleeve Knee Length

$27.29 CERQULAR
Old Navy Casual Dress - A-Line: Black Solid Pattern Dresses - Used - Size X
THREDUP

Old Navy Casual Dress - A-Line: Black Solid Pattern Dresses - Used - Size X

$21.99 THREDUP
Zeagoo Women's Casual Dress Tie Waist Fall Ribbed Dress - Striped Black White / Small
ZEAGOO

Zeagoo Women's Casual Dress Tie Waist Fall Ribbed Dress - Striped Black White / Small

$41.31 ZEAGOO
Zeagoo Summer Dress Knee-Length Round Neck Floral Dress- Black (Black Flowers)
ZEAGOO

Zeagoo Summer Dress Knee-Length Round Neck Floral Dress- Black (Black Flowers)

$25.46 ZEAGOO
Eliza J Casual Dress - A-Line: Black Stripes Pattern Dresses - Used - Size
THREDUP

Eliza J Casual Dress - A-Line: Black Stripes Pattern Dresses - Used - Size

$18.99 THREDUP
MERYL FASHION Womens A-Line Dress Black Striped Long Sleeve Knee Length UK
CERQULAR

MERYL FASHION Womens A-Line Dress Black Striped Long Sleeve Knee Length UK

$27.29 CERQULAR
MONSOON Womens A-Line Dress Black Linen Sleeveless Knee Length UK
CERQULAR

MONSOON Womens A-Line Dress Black Linen Sleeveless Knee Length UK

$23.39 CERQULAR
Zeagoo Womens Casual Ruffle Tiered Floral Square Neck Sundresses
ZEAGOO

Zeagoo Womens Casual Ruffle Tiered Floral Square Neck Sundresses

$39.07 ZEAGOO
Zeagoo Velvet Dress V-Neck Long Sleeve Stretch Mini Dress - Pink / S(4)
ZEAGOO

Zeagoo Velvet Dress V-Neck Long Sleeve Stretch Mini Dress - Pink / S(4)

$49.44 ZEAGOO
Classic Knee Length A-Line T-Shirt Dress - Black Beige Ribbon / Large
KOSHER CASUAL

Classic Knee Length A-Line T-Shirt Dress - Black Beige Ribbon / Large

$45.90 KOSHER CASUAL
Modest Layering Dress with 3/4 Sleeves and No Slits - Black / Medium
KOSHER CASUAL

Modest Layering Dress with 3/4 Sleeves and No Slits - Black / Medium

$34.90 KOSHER CASUAL
Classic Knee Length A-Line T-Shirt Dress - Black Olive Freestyle / Small
KOSHER CASUAL

Classic Knee Length A-Line T-Shirt Dress - Black Olive Freestyle / Small

$45.90 KOSHER CASUAL
RSLOVE Mesh Mini Dress Babydoll Chemise
RSLOVE

RSLOVE Mesh Mini Dress Babydoll Chemise

$19.79 RSLOVE
Classic Knee Length A-Line T-Shirt Dress - Black Grey Freestyle / Large
KOSHER CASUAL

Classic Knee Length A-Line T-Shirt Dress - Black Grey Freestyle / Large

$45.90 KOSHER CASUAL
$50 to $1006 pieces
Daymor Couture Cocktail Dress - A-Line: Black Dresses - Used - Size
THREDUP

Daymor Couture Cocktail Dress - A-Line: Black Dresses - Used - Size

$57.99 THREDUP
Charming Sweetheart A-line Knee-Length Short Bridesmaid Dresses
CHICSEW TRADING CO., LIMITED

Charming Sweetheart A-line Knee-Length Short Bridesmaid Dresses

$79.99 CHICSEW TRADING CO., LIMITED
Past The Knee T-Shirt Dress - Comfortable A-Line Silhouette - Black White Gold Brushed / Medium
KOSHER CASUAL

Past The Knee T-Shirt Dress - Comfortable A-Line Silhouette - Black White Gold Brushed / Medium

$54.90 KOSHER CASUAL
T-Shirt Dress - Comfortable A-Line Silhouette - Spring/Summer 2026 - Black Swirl / Small
KOSHER CASUAL

T-Shirt Dress - Comfortable A-Line Silhouette - Spring/Summer 2026 - Black Swirl / Small

$54.90 KOSHER CASUAL
Sophie Pearl Trim Sheer Dress
W CONCEPT

Sophie Pearl Trim Sheer Dress

$402.00 W CONCEPT
Half Moon Collar Velvet Dress _ Black
W CONCEPT

Half Moon Collar Velvet Dress _ Black

$210.00 W CONCEPT

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