Rosie Huntington-Whiteley belted a silky dress for a chic look that we want to steal because it goes so easily from day to night. Stella McCartney's Spring sheath could be worn with strappy flats and a crossbody bag for something casual, but with the right styling it's dead-on for a slightly sexy work look. The key is belting the waist, and we suggest adding a white blazer to dress it up for the office (and maybe that Jason Wu bag for the most luxurious of work totes). To finish, Rosie contrasts the prettier lace detailing on her dress with a sportier pair of Alexander Wang heels, keeping the whole look in balance and not too overdressed. It's perfect for after-work drinks or even a dinner date. Feeling inspired? Shop our editors' picks to channel Rosie's chic play on a versatile dress.