By Brian
Updated July 13, 2007 08:45 PM

David Aguilera/Splash News Online

REESE WITHERSPOON, browsing and enjoying a successful shopping trip to Jill Roberts in Beverly Hills. The smiling actress chatted on her cell phone while scoping out the merchandise.

MARCIA CROSS, scouting the bathing suit section at Bloomingdale’s at Los Angeles’s Century City mall. Looking natural and carrying a selection of suits to try on, new mom Cross “was relaxed and low key,” a fellow shopper tells us. The Desperate Housewives star, who told PEOPLE she’s been losing weight with exercise DVDs and at the gym, browsed through each rack.

PAULA ABDUL, indulging in a major shopping spree at Arrogant Cat, a boutique on Great Portland Street in London. The Hey Paula star spent £6,500 — taking almost one of everything in the store!

MANDY MOORE,hitting upScoop in New York’s Meatpacking District. The singer-actress left with a signature nylon shopping bag — and continued on to lunch at neighboring bistro Pastis.

HAYDEN PANETTIERE, shoe-shopping with her boyfriend at the Beverly Center Steve Madden store. The Heroes star left the store with three pairs of shoes, including Mixup, Latch and Tallis.

MICHELLE WILLIAMS, indulging in some retail therapy with a girlfriend at DKNY’s Madison Avenue boutique where she stocked up on pieces from their fall/winter collection. Also at DKNY’s SoHo location: BILLY CRYSTAL, taking his wife on a shopping expedition.

HALLE BERRY, leaving trendy L.A> boutiques Madison and Ron Herman with a full load.