Aguilera strikes a pose while shopping in West Hollywood. Plus: Brad & Angie, Ashley Olsen, Leighton Meester and more

MIC CHECK

Gossip Girl star Leighton Meester puts on a sultry performance Tuesday night at the opening of nightclub Klutch in Miami. The singer-actress Tweeted she was "stoked" for the show, telling fans they were "gonna lose [their] socks."