Caught in the Act!
09/30/2010 AT 06:00 AM EDT
Also in Paris: Leonardo DiCaprio, who lunched with girlfriend Bar Refaeli at L'Ami Louis while in town for Fashion Week. Joining the couple? Naomi Campbell and her boyfriend Vladislav Doronin. Across town, Janet Jackson worked out at upscale health club L'Usine and then slipped into L'Avenue for a bite.
Ryan Seacrest and girlfriend Julianne Hough, sharing a pizza dinner in the garden at New York eatery La Lanterna di Vittorio. The two ordered an individual pizza Arrabbiata (with spicy garlic and tomatoes) and a pizza Nutella, as well as bread pudding and a bottle of wine.
Joe Jonas, strolling down La Cienega Boulevard with his arm around Ashley Greene's waist. She was carrying a box of leftovers and the pair seemed to have come from lunching at Real Food Daily.
Uma Thurman and daughter Maya, shopping at Limelight Marketplace in N.Y.C. The two locked their bikes up outside and then strolled through the shopping center with their helmets on, sampling food and testing kitchen gadgets.
By CARLOS GREER, KATE HOGAN, PETER MIKELBANK and ABBY STERN