People.com Celebrity Star Tracks: Tuesday, October 19, 2010 By People Staff Published on October 19, 2010 05:00 PM Share Tweet Pin Email 01 of 15 LEG UP Frederick M. Brown/Getty Ashlee Simpson-Wentz kicks up her heels Monday with husband Pete Wentz at the L.A. premiere of Kanye West's new short film, Runaway. 02 of 15 BELLA-ISSIMA Nick Hunt/PatrickMcMullan/Sipa A glamorous Kristen Stewart keeps her head up Monday at a screening of her newest film, Welcome to the Rileys, at the Tribeca Grand Hotel in New York City. 03 of 15 RAISE A GLASS Jeff Vespa/Getty Cheers! Gwyneth Paltrow and pal Kate Hudson celebrate Monday night at Elle magazine's 17th Annual Women in Hollywood Tribute in Beverly Hills, where both were honored for their contributions to the movies. 04 of 15 STEPPING OUT INF Just four days after giving birth, new mom Alicia Keys steps out in New York with hubby Swizz Beatz to pick up baby clothes for newborn boy, Egypt, on Monday. 05 of 15 PARTY LINES Stephen Chernin/AP First Lady Michelle Obama gets a warm welcome from famous friend Sarah Jessica Parker Monday night at a Democratic National Committee fundraiser in New York. 06 of 15 LACY LADY Brian To/WireImage She knows her textiles! Kelly Osbourne glams it up in a racy lace Tibi jumpsuit Monday during the 2010 International Designer of the Year Awards at L.A.'s Pacific Design Center. 07 of 15 HOW SWEET IT IS Mike Coppola/Getty Sing it! Sugarland's Jennifer Nettles and Kristian Bush hit the high notes Monday night while performing at New York's Best Buy Theater, where they were joined by special guest Jon Bon Jovi (not pictured). 08 of 15 GIVE HER A HAND INF Continuing on her European tour, Selena Gomez looks très chic Tuesday while heading over to NRJ radio studios in Paris to promote her new album, A Year Without Rain. 09 of 15 HELLO, KITTY! GSI Media What a purrrfect match! Brian Austin Green and Megan Fox cozy up to a feline friend during a visit to the Big Cat Encounters Ranch in Pahrump, Nev., on Friday. 10 of 15 MOMMY STEPS National Photo Group An expectant Christina Applegate shows her stripes – and growing baby bump – as she runs errands in Los Angeles on Monday. 11 of 15 HIGH FLYER Bmckay318/Meet The Famous Mariah Carey turns the jetway into her own private runway as she arrives at the Crestview, Fla., airport on Monday. 12 of 15 STYLISH TURN Fred Duval/FilmMagic It's a black magic night for Freida Pinto, who makes a ravishing star turn at the premiere of her new drama Miral during the 54th BFI London Film Festival on Monday. 13 of 15 ENVELOPE, PLEASE Doug Meszler/Splash News Online Does Nate Archibald have some news to share? Only Chace Crawford knows for sure as he films Gossip Girl on location on New York's Upper East Side on Monday. 14 of 15 MIX MASTER Seth Browarnik/Startraks Look who's on the ones and twos! Jenny McCarthy takes a spin on the turntable during a night out at the LIV nightclub in the Fontainebleau Miami Beach hotel on Sunday. 15 of 15 RING BEARER Kristin Callahan/Ace Pictures Who put a ring on it? Why soon-to-be birthday girl Kim Kardashian, who flashes some independence bling at the Ultimate Engagement Ring Search for the World's Best Couple Contest in N.Y.C. on Monday.