If you were wondering why Julia Roberts was at the Grammys, don't worry, you weren't alone. The "August: Osage County" star was there to introduce Paul McCartney and Ringo Starr before their performance. "It was 50 years ago today, almost, that four loveable lads from Liverpool changed history forever when they played 'The Ed Sullivan Show' for the first time on February 9, 1964," Julia said. She then went on to bring things full circle when she plugged the upcoming CBS special "The Beatles: The Night That Changed America The Grammys Salute" airing on Feb. 9. So even though it was a surprise to see America's sweetheart at music's biggest night, we think Julia Roberts handled the pressure of her high-profile gig pretty well. Plus, girlfriend looked stunning in that black cleavage-baring dress.