Britney Spears has been getting very busy lately. She completed her cameo appearance for the new Pussycat Dolls music video for “When I Grow Up.”

The recovering Pop-princess filmed at the WB lot in Burbank, CA of a brief “interaction” (the Pussycat Dolls shot in Hollywood separate from Spears) of Britney driving in a car as “they all wave at each other as they are passing in traffic,” as stated by Usmagazine.

The source said that “It was carefully planned out” and that “it is genius and you will love it!” Well we better be damn pleased with this little cameo, otherwise that source will be hunted down and smacked. Spears apparently looks blonde and hot, which makes us all so anxious to see it!