Nicole Richie and beau Joel Madden get gussied up for a good cause: the Sephora Project Launch Party Wednesday at L.A.'s Zune. At the event, the charitably-minded couple spent time with teenage girls from Girls for a Change, an organization empowering girls to make a difference in their neighborhoods.


Jennifer Aniston calls for attention Wednesday while filming a scene for her guest-starring role on NBC's 30 Rock in New York City. The former Friends star is brushing up her comedic chops to play a free-spirited Fatal Attraction-like stalker.


Dad-to-be Jerry O'Connell shows off an impressive juggling act while promoting his new sitcom Do Not Disturb with costar Niecy Nash during an event (featuring an obstacle course) at The Grove in Los Angeles. Their show premieres Sept. 10 on FOX.


Kathy Griffin kisses up to pal – and new Dancing with the Stars contestant – Lance Bass Wednesday at 944 Los Angeles magazine's two-year anniversary and pre-MTV Video Music Awards party at Los Angeles club The Kress.


Expectant mom Jennifer Garner – who hit a nail salon with a pal the day before – goes shopping Wednesday with her favorite sidekick, 2-year-old daughter Violet, in Brentwood, Calif. The pair were reportedly picking up things for the new member of the family.


Keira Knightley looks positively regal Wednesday at the London premiere of her movie The Duchess. The actress plays – what else? – an 18th-century duchess in the period film.


Pondering his next move, rapper Bow Wow checks his skills in a game of mix and match Wednesday, filling in as cohost of MTV's TRL in New York City.


Leona Lewis chills out with an iced drink while out Tuesday in New York City. The British singer will join the star-studded lineup at the Stand Up to Cancer TV charity event on Sept. 5.