Men might have a harder time pulling it off, but for women a white tux is glamorous and chic. The latest interpretation of Yves Saint Laurent's iconic "Le Smoking" (satin jacket and pants, Yves Saint Laurent
, $2,490 and $1,490)—"is the epitome of cool," says Rossum. "It says, 'I'm confident in my body, I don't need to wear sequins to be sexy—I'm gonna wear a white YSL power tuxedo and look awesome.'"
: "Wary of going full-on white? Try a silver or gold heel."
Silk georgette tank, Cushnie et Ochs, $695. Necklace, H.Stern. Ring, Laila Rowe. Shoes, L'Wren Scott.
Dazzling winter essentials under $100