Gwyneth Paltrow hung out backstage at this evening's Grammy Awards in LA. She's on the long list of stars who will present an honor during the ceremony, and she'll take the stage in her cutout Stella McCartney gown. Gwyneth hit the Grammys with her husband Chris Martin. His band, Coldplay, starred in one of the evening's most anticipated performances when they teamed up with Rihanna. It's a big night for Chris and his group, since they were nominated in three categories. Gwyneth has a long history with the Grammys. Last year, Gwyneth sang "Forget You" with CeeLo Green. She presented at the 2009 show, and was actually nominated that year for an audio book she recorded based on the Bill Martin, Jr. children's books.