Celebrity Star Tracks: Tuesday, September 14, 2010 By People Staff Published on September 14, 2010 05:00 PM Share Tweet Pin Email 01 of 15 LONDON TIMES Splash News Online Kim Kardashian continues on her tour of London, stopping to pose with an artistic fan before heading into BBC's Radio 1 studios on Tuesday. 02 of 15 BRIGHT SPOT Alberto E. Rodriguez/Getty Natalie Portman has plenty to smile about at the Toronto International Film Festival premiere of Black Swan in Canada on Monday – she's earning major accolades for her dark, daring role. 03 of 15 MAKING THE GRADE Eric Charbonneau/WireImage After a night out at the VMAs, Emma Stone and Taylor Swift put their heads together at the premiere party of Stone's latest film, Easy A, at L.A. lounge h.wood Monday night. "Easily, definitely, absolutely my new favorite movie," Swift later Tweeted. 04 of 15 PARTY HOPPER Turgeon/Rocke/Splash News Online Following her surprise appearance on stage at Yankee Stadium during Jay-Z and Eminem's star-studded concert Monday night, Beyoncé (in Roberto Cavalli) happily hits the afterparty at New York's 40/40 Club. 05 of 15 TRAVELING LIGHT National Photo Group Looks like a meat-free Monday for Lady Gaga! The over-the-top singer arrives at New York's JFK Airport in lingerie, handcuffs and her favorite Alexander McQueen "Armadillo" shoes – a pared down look from the night before, where she scooped up eight Moonmen at the VMAs. 06 of 15 SHOW OF SUPPORT Jason Merritt/Getty The Aussies take Canada! A casual Keith Urban joins wife Nicole Kidman Monday night for the debut of her new film, The Rabbit Hole, at the Toronto Film Festival. 07 of 15 HAIR IN MADRID Robert Smith/IPA/iPhoto Blue-eyed hunk Zac Efron sports his new scruff at the Spanish premiere of his latest film, Charlie St. Cloud, in Madrid on Monday. 08 of 15 ALL WORK, NO PLAY Nate Jones/Pacific Coast News MTV's Best New Artist Justin Bieber wastes no time in getting back to work Monday, filming the music video to his song, "U Smile," in downtown Los Angeles. Relive the best and worst moments of the VMAs here! 09 of 15 EASTERN PROMISES Anton Belitsky/Epsilon/Getty After taking in the sights in Paris, a glam Eva Mendes heads east, blowing a coy kiss at the Moscow premiere of The Other Guys on Monday. 10 of 15 CHARITABLY CHIC Chelsea Lauren/Getty She's totally dialed in! Hilary Duff stylishly mans the lines in remembrance of the 9/11 attacks at the 6th annual BGC Charity in New York City on Monday. 11 of 15 HOW 'W.E.' ROLL Splash News Online Now that's a camera grip! Madonna captures the drama for her second directorial effort, W.E., at Sotheby's in New York City on Monday. 12 of 15 OH, CANADA! Jason Merritt/Getty Vancouver native Ryan Reynolds does the Canadian wave at a press conference for Buried – a timely film about a truck driver in Iraq who is held hostage six feet under – at the Toronto International Film Festival on Monday. 13 of 15 LUNCH BUDDIES Diane Bondareff/PictureGroup Is Naomi Campbell stepping on Oprah's territory? The supermodel buddies up with the talk-show queen's bestie Gayle King at Essence magazine's Fierce amp Fabulous Awards luncheon at New York's Mandarin Oriental Hotel on Monday. 14 of 15 FASHION PLAY Michael Loccisano/Getty Kelly Osbourne continues her N.Y.C. style tour in a sexy LBD, lace headband and chunky cross backstage at the Tracy Reese fashion show on Monday. See more celebrity front-row style! 15 of 15 REPEAT CONTENDER Humberto Carreno/Startraks In town to show her L.A.M.B. collection, Gwen Stefani pairs her favorite lace cami with a motorcycle jacket and some mega-platform heels while stepping out in N.Y.C. on Monday.