Karen O Performs 'The Moon Song' from 'Her' at Oscars 2014 - Watch Now!

Karen O goes for a plunging neckline while attending the 2014 Academy Awards held at the Dolby Theatre on Sunday (March 2) in Hollywood.

The 35-year-old singer was joined on the red carpet by her hubby Barnaby Clay.

“moon song rising on #Oscars soon!” Karen‘s band the Yeah Yeah Yeahs tweeted earlier.

During the show, Karen took the stage with Vampire Weekend‘s Ezra Koenig to perform “The Moon Song,” which she wrote for the film Her. She’s up for Best Original Song. Good luck, Karen!

Watch her performance of “The Moon Song” below!

FYI: Karen is wearing a Camilla Staerk dress and Sophia Webster heels.