MICHAEL SIMON/STARTRAKS PHOTOMODERN WOMAN: Debra Messing, carrying a Modern Leo doctor bag by Donna Karan while running errands in Beverly Hills, including getting her hair done for her birthday party later that night.
ON THE RADIO: Ryan Phillippe and girlfriend Abbie Cornish hitting the Radiohead concert at the Hollywood Bowl, as did Christina Aguilera, Josh Brolin and Diane Lane.
DATE NIGHT: Gwyneth Paltrow and Chris Martin, having dinner at the Palm in East Hampton, New York.
CROWDED ROOM: Salma Hayek, Leonardo DiCaprio, Orlando Bloom and girlfriend Miranda Kerr, Stuart Townsend and Rufus Sewell, helping pal Daya Fernandez celebrate her birthday at the Stork in Hollywood.
LADY'S NIGHT: T.R. Knight and boyfriend Mark Cornelsen, hitting Lady GaGa's late-night gig at Tom Whitman's Cherry Pop gay party in West Hollywood.
PLAY TIME: Jane Lynch, checking out a performance of Sissystrata at L.A.'s Celebration Theatre.
DO NOT DISTURBIA: Rihanna and Chris Brown, enjoying some Häagen-Dazs ice cream while strolling through the Grove mall in L.A.
SHADY BUSINESS: Christina Milian, picking up Carrera sunglasses from the Solstice Sunglass Boutique at the Declare Yourself gifting lounge in the Hollywood Hills.
BACKED UP: Michael Cera, carrying a red knapsack while walking with a friend in L.A.'s Los Feliz neighborhood.
CHICKEN DANCE: Jennie Garth and hubby Peter Facinelli, taking their kids to lunch at the Koo Koo Roo chicken restaurant in Larchmont Village in L.A.
—Additional reporting by Claudia Rosenbaum