long dress polkadot Marlow Polka Dot Maxi In Black back polka Linen Sleeveless Polk-A-Dot Maxi Shirt

Alexa Chung went to designer Nensi Dojaka with a photo of Knightley's dress as the inspiration for her outfit to this year's London Serpentine summer party

There's just something so classic (read: sexy) about a LBD that turns heads

NOTE: Sizes 15.5 through 17.5 are a tailored fit, size 18 and above are a classic fit

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