LBD: Check. Red lip: Check. Emmy Rossum proved less really is more at the Los Angeles premiere of "You're Not You," with a black Altuzarra cocktail dress, a flash of leg and a red mani to match her statement lip.

We also love this curve-enhancing Altuzarra dress that has a similar silhouette.

Dressing a baby bump doesn't mean you have to dial back the sex appeal. Case in point: Rosamund Pike's flowy Altuzarra dress came equipped with a thigh-high slit to add some sultriness to her "Gone Girl" premiere look in New York City.

This halter-neck maxi dress will get you a similarly body-conscious fit complete with a flirty slit.

Though she went through a whopping seven dress changes as a host of the ALMA Awards, we were particularly fond of her yellow-chartreuse number featuring a thigh-high slit and an unexpected pop of color.

This floor-length halter gown comes in the same unique color and features a draped slit that will help you turn heads.

Lea Michelle turned up the sex appeal at the Los Angeles premiere of "American Horror Story: Freak Show," in a velvet Cushnie et Ochs dress featuring a plunging neckline and a high-high slit.

Buy the ready-to-wear version with a slightly more modest neckline now: Cushnie et Ochs Velvet Dress.

TV presenter Laura Whitmore took the thigh-high slit to the next level with her navy blue maxi dress, which she wore for the Mondrian hotel launch in London.

Try this ribbed knit maxi dress for an almost identical look.