Weekend Wrap-Up: Disco Legend Robin Gibb Passes Away, Katy Perry and Justin Bieber Dominate the Billboard Music Awards

Weekend Wrap-Up: Disco Legend Robin Gibb Passes Away, Katy Perry and Justin Bieber Dominate the Billboard Music Awards: The weekend took a somber turn when news broke that Bee Gees singer Robin Gibb passed away at age 62 Sunday morning, but ended on an upbeat note as celebs rocked the 2012 Billboard Music Awards in...