Celebrity Star Tracks: Tuesday, February 1, 2011 By People Staff Updated on January 24, 2022 01:04 PM Share Tweet Pin Email Trending Videos 01 of 17 UNDER COVER Ivan Nikolov/WENN That's dedication! Sandra Bullock heads out for a workout Monday, bundling up to battle New York City's wintry weather. 02 of 17 WHITE OUT Ahmad Elatab/Splash News Online Got snow? Life's a winter wonderland for Gwen Stefani and her blonde boys, 4½-year-old Kingston and 2-year-old Zuma, while vacationing in Mammoth Lakes, Calif., with dad Gavin Rossdale (not pictured) on Monday. 03 of 17 ON THE MOVE GVK/Bauer-Griffin Bon voyage! With his bag in tow, a leather-clad Brad Pitt is ready to jet at Los Angeles International Airport on Monday. 04 of 17 GREAT STRIDES Fame Days after leaving treatment a beaming Demi Lovato steps out to run errands Monday in Santa Monica, Calif. 05 of 17 GOOD JEANS Juan Sharma/Pacific Coast News After cheering on his hometown Boston Celtics, it's back to work on Monday for Matt Damon, who rocks another denim look on the L.A. set of We Bought a Zoo. 06 of 17 WARM-UP GEAR Christopher Peterson/BuzzFoto Who's that guy? A sporty Bradley Cooper goes incognito Monday, donning glasses and a cap during his walk through blustery New York City. 07 of 17 A HERO'S WELCOME GVK/Bauer-Griffin Inception's Tom Hardy – set to star in The Dark Knight Rises – proudly displays his superhero allegiance Monday while arriving at Los Angeles International Airport. 08 of 17 WELL-DONE David Tonnessen/Pacific Coast News Good meal? A dapper Ryan Seacrest looks satisfied after enjoying dinner with friends at Boa Steakhouse Monday night in West Hollywood. 09 of 17 GETTING THE GOODS XposurePhoto Shopping buddies – or something more? Kirsten Dunst and a male pal hit the shops at outdoor mall The Grove Monday in Los Angeles. 10 of 17 GOOD SPORT Mavrix Did she score a hole-in-one? Jenny McCarthy flexes some muscle while hitting the mini-golf course during a Royal Caribbean Allure of the Seas short film shoot on Monday. 11 of 17 BOYS' CLUB xposure It's back to New York! Following a in L.A., Mariska Hargitay's little guy, 4-year-old son August, hooks up with Big Apple buddy Alec Baldwin Monday at Los Angeles International Airport. From the red carpet to the afterparties, see how Hollywood celebrated the SAG Awards! 12 of 17 CHEW ON THIS Doug Meszler/Splash News Online What, no workout? A clean-shaven Hugh Jackman takes a time out for a snack while stepping out in New York City on Monday. 13 of 17 SUNNY SIDE UP Bauer Griffin Kelly Osbourne makes running errands look oh-so-chic on Monday, donning hot pink lipstick and a ruffled dress for an outing in West Hollywood. 14 of 17 TAKE TWO Bill Davila/Startraks Teen dream Justin Bieber swings by the Late Show with David Letterman studios in New York Monday to promote his upcoming movie, Justin Bieber: Never Say Never. The 3D concert/documentary hits theaters Feb. 11. 15 of 17 FLY GIRL xposure Leading with her baby bump, 30 Rock's Jane Krakowski makes her way through Los Angeles International Airport on Monday after attending this weekend's SAG Awards. From the red carpet to the afterparties, see how Hollywood celebrated the SAG Awards! 16 of 17 IN THE HOODIE GSI Media Time for some male bonding! Doting dad Pete Wentz takes his 2-year-old son Bronx out for some fresh air Monday in Beverly Hills. 17 of 17 'BRAND'-NAME SHOPPER Russell Brand A fashionable Russell Brand looks cozy in a shearling-style coat while shopping in New York's Soho neighborhood on Monday.