Sienna Miller Is Wearing Oscar de la Renta on Oscars 2015 Red Carpet

Sienna Miller
AP Images

The actress opted for a black, floor-length gown for her red carpet look.

Sienna Miller chose a black Oscar de la Renta dress for her red carpet look at the 2015 Academy Awards held at the Dolby Theatre on Sunday (Feb. 22) in Hollywood. 

New York-born, London-raised model's daughter Sienna Miller made a major, screen-stealing impression opposite Daniel Craig in 2004's Layer Cake and followed that up in a virtuoso turn as the glamorous and doomed Edie Sedgwick in Factory Girl (2006).

Photos: See all of Hollywood's brightest stars in the 2015 Oscars Red Carpet photo gallery

Miller's presence at the 2015 Academy Awards is bound to raise some ambivalence within her. She played lead wife in two films nominated for Oscars best picture this year—Foxcatcher and American Sniper. At best, she's looking toward one wild celebration, and one sad consolation. 

Be sure to watch the 2015 Oscars, hosted by Neil Patrick Harris tonight at 5:30p.m. PT/8:30 p.m. ET on ABC.