Celebrity Star Tracks - Thursday, August 30, 2007 By People Staff Published on August 30, 2007 05:05 PM Share Tweet Pin Email Trending Videos 01 of 16 POP STAR CROSSING After winding down another leg of her world tour, Gwen Stefani soaks up the Hawaiian sun – and stops for groceries – while hanging loose with her family in Maui on Wednesday. But it's back to work for the singer on Sept. 10, when her Sweet Escape tour revs back up in Hamburg, Germany. 02 of 16 LOOK MA, NO HANDS! Mike/Fame Pictures Picking up on a favorite celebrity sport this summer, The Hills star Lauren Conrad rides the waves Wednesday, boogie boarding and hanging with friends at the Silver Spoon Beach House in Malibu. 03 of 16 WORKING GIRL Crollalanza/Beiny/WENN Still sporting a glow from a Hawaiian vacation, Jennifer Aniston jumps back into action with a business meeting in Los Angeles on Wednesday. The actress is putting the focus back on her movie career: She's tipped to appear in the ensemble comedy He's Just Not That Into You. 04 of 16 SAILING BY Charriau-Khayat/ABACA Jude Law makes a characteristically stylish arrival – by water taxi! – at the 64th annual Venice Film Festival, where the actor was on hand to promote his movie Sleuth at Lido's Casino on Thursday. 05 of 16 TAKEN TO THE CLEANERS cpb/cnb/Finalpixx After a string of concerts to promote her album and the spring collection of her clothing line Mblem, Mandy Moore settles back into her daily routine with a dry-cleaning pickup in Los Angeles on Wednesday. 06 of 16 STEERING THE SHIP Splash News Online Another day, another bikini: Amy Winehouse relaxes on the open seas as she continues her Caribbean vacation with hubby Blake Fielder-Civil on Tuesday. A rep for the troubled singer recently announced the cancellation of her scheduled appearance at the MTV Video Music Awards in order to support her "well being." 07 of 16 IT TAKES TWO Rick Diamond/WireImage They may have married in a quiet ceremony, but Usher and Tameka Foster make a loud appearance on the red carpet at the opening of Jermaine Dupri's Studio 72 nightclub on Wednesday in Tucker, Ga. 08 of 16 HANDS ON MOM Jeff Steinberg/INF Despite harsh criticism from ex-husband Charlie Sheen, Denise Richards keeps a play date with daughters Lola, 2, and Sam, 3, at a Los Angeles park on Wendesday. 09 of 16 FESTIVAL QUEEN Ramey Though she kicked off her shoes on the red carpet, Keira Knightley still sparkles like fairytale royalty in Chanel haute couture as she opens the Venice Film Festival on Wednesday with the premiere of her wartime romance, Atonement. 10 of 16 LEG WARMING UP Gina Boyd/startraks She's gonna learn how to fly! Ellen DeGeneres achieves liftoff with a little help from The Alvin Ailey American Dance Theater troupe while taping a segment for her talk show in New York City on Wednesday. Season five premieres Sept. 4 from the Big Apple. 11 of 16 LIKE, IT'S A DATE! SS/Flynet Nick Lachey and Vanessa Minnillo head down to the real O.C. – Laguna Beach, Calif. – for a dinner with friends on Tuesday. 12 of 16 FASHION FORWARD Elizabeth Lippman/ Splash News Online A well-accessorized Courtney Love makes her way through the Project trade show in Las Vegas on Tuesday. The singer was reportedly doing research for a new clothing line she plans to launch with a friend called Never the Bride. 13 of 16 A MAN'S PLACE Marcel Thomas/FilmMagic. Does he make her look good? Ashton Kutcher, who says men "are merely accessories" for women, gets a visit from fashionable wife Demi Moore on the New York set of What Happens in Vegas ... on Wednesday. 14 of 16 CAMERA MAN Gabo/Bauer-griffin Following his Superbad premiere, Michael Cera is ready to take some pictures of his own. The actor picked up some supplies at Samy's Camera Shop in Los Angeles on Thursday. (Click here to see what happened when we turned the camera on him!) 15 of 16 SWEPT AWAY Matt Keeble /Splash News Online Sienna Miller, with recent companion Rhys Ifans, stocks up on her garden essentials during an errand run on Tuesday in London. More on Sienna:See the latest photos, news and a full bio 16 of 16 POP STAR CROSSING After winding down another leg of her world tour, Gwen Stefani soaks up the Hawaiian sun – and stops for groceries – while hanging loose with her family in Maui on Wednesday. But it's back to work for the singer on Sept. 10, when her Sweet Escape tour revs back up in Hamburg, Germany.