Name this group? I can't remember their name...?

Okay so there was this group I used to listen to A LONG TIME AGO. They're was a blonde girl who sang and two guys im positive they were white rapped. Thery had a song produced by RedOne and Konvict Music and I think they toured a bit with The Black Eyed Peas. Can someone help me out?? and they sung with Akon once in a video also before the blonde girl joined the group I think the guys rapped a song with Birthday in the title. CAN YOU HELP ME PLEASE <3 ITS KILL ING ME. -btw im a girl LOL