And just like that, Jennifer Lawrence is immortalized -- goofily! -- in Oscar history. The 22-year-old star won the Best Actress Academy Award inside the Dolby Theater in Hollywood on Feb. 24. Ascending the Oscars stage in a stunning pale Dior Haute Couture gown, Lawrence suffered every actress' nightmare: She face-planted! Tripping on her sizable frock, the blonde fell down on the steps, and was quickly helped up.