Actress Rose Byrne arrives at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Michael Buckner/Getty Images)

Actor Sacha Baron Cohen, dressed as his character “General Aladeen”, arrives at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

Actor Brad Pitt and actress Angelina Jolie arrive at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Jason Merritt/Getty Images)

Actress Rooney Mara arrives at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Michael Buckner/Getty Images)

Actress Natalie Portman arrives at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Jason Merritt/Getty Images)

Actress Penelope Cruz arrives at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

Actor George Clooney and Stacy Keibler arrive at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Kevork Djansezian/Getty Images)

Actress Angelina Jolie arrives at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

Actor Jean Dujardin arrives at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

Actor Gary Oldman and Alexandra Edenborough arrive at the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Ethan Miller/Getty Images)

Actress Meryl Streep accepts the Best Actress Award for “The Iron Lady” onstage during the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Kevin Winter/Getty Images)

Presenters Jennifer Lopez and Cameron Diaz speak onstage during the 84th Annual Academy Awards held at the Hollywood & Highland Center on February 26, 2012 in Hollywood, California. (Photo by Kevin Winter/Getty Images)