Marc Malkin

FAME

LUNCH BREAK: Ashlee Simpson-Wentz and Pete Wentz, getting a bite to eat at Cafe Med in Los Angeles.

FAMILY GUY: Ryan Gosling, bringing his mom and sister to jazz night at Hollywood hot spot Green Door.

MEATY COMEDY: Sarah Silverman, grabbing a burger at 25 Degrees in the Hollywood Roosevelt Hotel.

FAMILY JEWELS: Katherine Heigl, stopping into Avakian jewelers with her mom at the Beverly Wilshire Hotel.

GIGGLE FEST: Jamie Lee Curtis and hubby Christopher Guest, laughing in their orchestra level seats during Ricky Gervais' comedy show at the Kodak Theatre in Hollywood.

BLAME CANADA: Joan Rivers, having dinner at Schwartz's deli in Montreal while in the city for the Just for Laughs Comedy Festival.

COLDPLAYA: Leonardo DiCaprio, having lunch with Lukas Haas at La Scala in Beverly Hills a few hours before hitting the Coldplay concert at the Forum with his girlfriend Bar Refaeli.

GREEN DAY: Adrian Grenier, hitting the EcoStiletto.com launch party at Murano Restaurant & Lounge in West Hollywood.

WATER BREAK: 50 Cent, performing at vitaminwater's Best of New York party for baseball's All-Star Week.

GLASS ACT: Molly Sims, picking up some Hourglass Cosmetics foundation at Barneys New York in Beverly Hills.

PANTY RAID: Celeb stylist Jay Manuel, hosting a Calvin Klein women's underwear fashion show at Lord & Taylor's in Washington, D.C.

PROJECT RUNWAY: Howard Stern, joking that he designed the Ralph Lauren dress that his fiancée Beth Ostrosky was wearing at Savanna's in Southampton, N.Y., during her Hamptons magazine party.

CHANEL SURFING: Lisa Rinna, shopping at Chanel on Robertson Boulevard in L.A.

—Additional reporting by Matt Donnelly