Jenny Packham EXCLUSIVE AT NET-A-PORTER. When Jenny Packham was tasked with designing a party capsule for us, the British designer imagined the kind of styles Bianca Jagger would have worn to Studio 54 in the '70s. Made from tulle covered in scores of light-catching sequins, this gown has a plunging, wrap-effect bodice and crystal-embellished cutout sleeves. The thigh slit will show off your sandals as you walk, so we recommend matching your pedicure to a red lip.