The hat returns! Pharrell Williams changed out of his fancy Bermuda shorts and into his infamous Arby's hat to perform "Happy" at Sunday's Oscars.
Pharrell's performance included an audience dance breakout with a few of Hollywood's most famous leading ladies. Meryl Streep, Amy Adams and Lupita Nyong'o all demonstrated their happiest hip shakes — Jennifer Lawrence bowed out of the dance party, likely fearing she might take a tumble while attempting to twerk.
See also: An Emoji Guide to the 2014 Best Picture Oscar Nominees

Image: ABC

Image: ABC

"Happy" appeared on the Despicable Me 2 soundtrack and is nominated for Best Original Song.
This is what happens when you don't invite Taylor Swift to your awards show, people.

BONUS: Oscar's Most Stunning Red Carpet Moments

Sandra Bullock arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Jennifer Lawrence arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Cate Blanchett arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Lady Gaga arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Leonardo DiCaprio arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Brad Pitt, left, and Angelina Jolie arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Lupita Nyong'o arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Julia Roberts arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Jared Leto arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Naomi Watts arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Martin Scorsese arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Matthew McConaughey, left, and Camila Alves arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Amy Adams arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Sarah Paulson arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Meryl Streep arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Kevin Spacey arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Kelly Ripa arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Joseph Gordon-Levitt arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Chiwetel Ejiofor, left, and Sari Mercer arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Pharrell Williams, left, and Helen Lasichanh arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Anne Hathaway arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Bradley Cooper arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Anna Kendrick arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Jonah Hill arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Olivia Wilde arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
June Squibb arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Christian Bale, left, and Sibi Blazic arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Idina Menzel arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Steve Coogan arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Kristen Bell arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Charlize Theron arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Jennifer Garner arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Portia de Rossi arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Kristin Chenoweth arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Barkhad Abdi arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Glenn Close arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Alfonso Cuaron, right, and Sheherazade Goldsmith arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Emma Watson arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Penelope Cruz arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Olga Kurylenko arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Kerry Washington arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Christoph Waltz arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Christine Teigen arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Jason Sudeikis arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Channing Tatum, left, and Jenna Dewan arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Kate Hudson arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Benedict Cumberbatch arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Viola Davis arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Johnny Weir arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Bruce Dern, left, and Andrea Beckett arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Jessica Biel arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Maria Menounos arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Julie Delpy arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Kellan Lutz arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Will Smith, left, and Jada Pinkett Smith arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Ashley Wagner arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
TV personality Michael Strahan attends the Oscars held at Hollywood & Highland Center on March 2, 2014 in Hollywood, California.
Adele Fassbender, left, and Michael Fassbender arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Liza Minnelli arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Calista Flockhart arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Will Forte arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Sally Hawkins arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Robin Roberts arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Goldie Hawn, left, and Kurt Russell arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Laura Dern arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Shaun Robinson arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Bette Midler arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Mario Lopez arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
Sara Ishaq arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.
U2 arrive at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles.