Billboard Music Awards Celebrity Pictures

The 2012 Billboard Music Awards are rolling into Las Vegas today. With Carrie Underwood, Justin Bieber, Usher and Katy Perry scheduled to perform and Adele, Rihanna and Drake nominated, it's shaping up to be a great show. Before we check out all the action, we're taking a look back at the Billboard fun in years past. Remember when Destiny's Child took the stage and when Gwen Stefani showed off her abs for the crowd? Don't forget last year's excitement with Taylor Swift and Selena Gomez or Britney Spears' 2004 photo op with Kanye West. Click through to see all the photos, and check back later for coverage from the show!