Rihanna & Britney Spears Open The 2011 Billboard Music Awards

Rihanna (who copped the award for Top Radio Songs Artist of the Year) brought out Britney Spears to give a Vegas spark to her Billboard Music Awards opening performance tonight.

In case you missed it, peep the pics and vid of their "S&M Remix" performance after the cut....
Pics of the two on stage and kicking it backstage:

Backstage with Jay, Julez, and Brit:

Lovin' this white suit.
In total, Rihanna walked away with three awards (Top Female Artist, Top Radio Songs Artist, Top Rap Song: Eminem Feat. Rihanna — “Love The Way You Lie”).