2011 ACM Awards: Rihanna and Jennifer Nettles' 'California King Bed' Duet

 Rihanna and Jennifer Nettles hook up in "California King Bed" during the live ceremony of the 46th Annual Academy of Country Music Awards on April 3. RiRi sported a white dress and a flaming orange pixie haircut, while the Sugarland female singer donned a black and purple tube outfit.

"She is a wonderful performer," Jennifer praised RiRi after their live duet. She added, "Obviously, country music is hip and it's cool and it's fresh, and I think her being here tonight is even more testimony to that."

Earlier that night, Jennifer took the stage with her Sugarland mate, Kristian Bush, to sing their own song "Tonight". In addition to performing, the duo came to the stage to collect their Top Vocal Duo of the Year prize, marking the fourth year in a row they got the title.