Britney Spears is to make an appearance in the new Pussycat Dolls video.
The singer was spotted in Burbank, California, meeting up with the girl group, who are shooting the promo for
When I Grow Up there. An insider said, "She is doing a cameo in their new video shoot today."
Britney once appeared with the Pussycat Dolls as part of a special performance for her older brother Bryan's birthday. The video is the latest venture for Britney, 26, who has been trying to get her life back on track since her breakdown in January.
View more photos of Britney Spears in bikini