People.com Celebrity Star Tracks: Friday, September 17, 2010 By People Staff Published on September 17, 2010 05:00 PM Share Tweet Pin Email 01 of 15 SWEET THINGS Ramey Even stylish starlets can't resist an ice cream craving! Kim Kardashian and mom Kris Jenner stop for some frozen treats on Thursday while continuing their fashionable trek through Paris. 02 of 15 PEACE, MAN Doug Meszler/Splash News Online Ryan Reynolds flashes his signature wave Friday while leaving the N.Y.C. set of the Early Show, where he talked up his latest film, Buried. 03 of 15 CLUB QUEEN INF She's ready to party! While ex Jesse James settles down with Kat Von D, a chic Sandra Bullock lives it up on Thursday, partying with pals at West Hollywood hotspot The Abbey. 04 of 15 STOMACH TROUBLE FayesVision/WENN Is she taunting her dance partner? Dancing with the Stars pro Karina Smirnoff – who will hit the ballroom with partner Mike "The Situation" Sorrentino on Monday – flashes her own fantastic abs on Thursday during a visit to an L.A. gifting suite. 05 of 15 PEACEFUL GATHERING Ramey American Idol star Adam Lambert enjoys some fun in the sun with friends on Thursday in Miami Beach, Fla. "Please everyone forgive me for that hat," he later Tweeted. "I was attempting a disguise – clearly failed. Haha." 06 of 15 SHOW STOPPER Johns PkI/Splash News Online Another day, another show! Gossip Girl's Leighton Meester flaunts her tummy and enviable Navajo PS1 satchel at Proenza Schouler's Spring 2011 presentation in N.Y.C on Wednesday. 07 of 15 FASHION'S DAY OUT Ahmad Elatab/Splash News Online After glamming it up in Toronto, Carey Mulligan dresses for comfort in a cozy Elizabeth and James outfit, stocking up on wardrobe essentials at an N.Y.C. Prada store on Thursday. 08 of 15 FASHION HOUSE(WIFE) Jeffrey Ufberg/WireImage After announcing that all the New York Housewives will return for another dramatic season, resident bad girl Kelly Bensimon flashes a toothy grin while leaving New York Fashion Week at Lincoln Center on Thursday. 09 of 15 NAILED IT Katie B/EaglePress Gwen Stefani treats 4-year-old son Kingston to some afternoon pampering in New York Thursday, where mother and son got manicures and pedicures. 10 of 15 CHIC SEAT Jason Kempin/Getty Looking good! Katie Holmes enjoys a fab front-row view of the Calvin Klein Spring 2011 fashion show in New York City Thursday. See more style stars at New York Fashion Week! 11 of 15 CIAO, BABBO! Evandro Inetti/Zuma Bring on the pizza! Dad-to-be Javier Bardem strikes a dashing pose with costar Julia Roberts at their Eat Pray Love premiere in Rome Thursday. 12 of 15 BIRTHDAY BRO GSI Media It's a juggling act for birthday boy Nick Jonas! The singer, who just turned 18, is right back to work, heading to his concert with his brothers and Demi Lovato (not pictured) in Chula Vista, Calif., on Thursday. 13 of 15 HIRSUTE HIMSELF Xposure Still sporting his new beard, a dapper Zac Efron hits the red carpet for the U.K. premiere of his latest film, Charlie St. Cloud, at London's Leicester Square Thursday. 14 of 15 ACTIVE ENDEAVORS Splash News Online Looking and feeling good: Matthew McConaughey flashes a smile Thursday while heading to his car after working out at a Studio City, Calif., gym. 15 of 15 FAMILY BUSINESS INF Mom-to-be Lily Allen and her sister Sarah Owen join forces and celebrate the launch of their new London clothing store, Lucy in Disguise, Thursday in London.