Celebrity Star Tracks - Thursday, March 15, 2007 By People Staff Published on March 15, 2007 05:25 PM Share Tweet Pin Email Trending Videos 01 of 15 SHOW OFFS Jeff Vespa/WireImage Jennifer Lopez and Marc Anthony demonstrate how marital collaboration works while celebrating their film El Cantante at the annual ShoWest conference in Las Vegas on Wednesday. See more photos, news and a full bio of Jennifer Lopez 02 of 15 TWICE AS NICE Frazer Harrison/Getty As the new face of Bebe Sport, Eva Longoria gets ready for her big blowout at a Cosmopolitan-sponsored cocktail party thrown in her honor at Skybar in L.A.'s Mondrian hotel on Wednesday. The Desperate Housewife was also toasting her 32nd birthday a day early, telling PEOPLE: "Tomorrow is the actual birthday. I spent my birthday with (fiancé) Tony already, so that was the romantic birthday. Now it's just fun." See more photos, news and a full bio of Eva Longoria 03 of 15 'SHORE' THING Chris Whittle/Splash News A day after returning from their Italian getaway, Jessica Simpson and John Mayer continue their romance Stateside on Wednesday, where the pair headed out for lunch at the Ivy at the Shore restaurant in Santa Monica. See more photos, news and a full bio of Jessica Simpson 04 of 15 TOUR DE ROMANCE Billy Farrell/Patrick McMullan/Sipa Press Lance Armstrong plays arm candy to fashion designer Tory Burch at the launch party for cosmetics queen Bobbi Brown's new book Living Beauty in New York on Wednesday. A source tells PEOPLE that the couple, who have been quietly dating for months, are "having a great time." 05 of 15 AFTER THE FALL Michael Williams/startraks After a slip on the runway, Carmen Electra recovers with grace at the Max Factor Salutes Hollywood Fashion charity fashion show Wednesday in Hollywood. At the show, Electra told PEOPLE how she's recovering from another big event – her recent divorce from Dave Navarro. "Everything's been going really good," she said about being single again. Get the scoop on Carmen's fashion tumble on our Off the Rack blog. 06 of 15 DANCING WITH A STAR HENRY McGEE/GLOBE Dancing with the Stars runner-up Mario Lopez shows he still has all the right moves at the launch of the Smart Spot Dance program (which promotes a healthier lifestyle through exercise) at a New York YMCA on Wednesday. 07 of 15 CHECK MATE Celebrity Babylon Avril Lavigne flaunts her love of patterns from head to toe during a shopping trip in Beverly Hills on Wednesday. Next up for the singer: her new album The Best Damn Thing, which is released on April 17. See more photos, news and a full bio of Avril Lavigne 08 of 15 IS HE KIDDING? INF A practically unrecognizable Kid Rock looks ready to head back to the farm as he hails a cab in Midtown Manhattan on Tuesday. The musician, who was in town to attend the Rock amp Roll Hall of Fame induction ceremony, is actually heading home to Detroit to join Bob Seger for some concert dates. 09 of 15 MARCH MADNESS Humberto Carreno/startraks What do you do when temperatures near 70 degrees in March? Uma Thurman has the right idea, getting a refreshing soak before shooting a rainy scene on the Queens, N.Y., set of her romantic comedy The Accidental Husband on Wednesday. 10 of 15 FLIGHT PLAN Bauer-Griffin Despite what her T-shirt reads, Sandra Bullock is going by plane as she prepares for takeoff at Los Angeles International Airport on Wednesday. The Premonition star recently gushed to PEOPLE about her other role as stepmom to husband Jesse James's three children: "My love and my want for their future and their happiness...is no less than if I'd had a child on my own." 11 of 15 STRAIGHT 'SHOOTER' Patricia Schlein/ WENN Surrounded by his three-man entourage, Mark Wahlberg goes on foot patrol in New York on Wednesday. The star is in town promoting his film Shooter, which opens in theaters March 23. 12 of 15 LITTLE MISS SUNSHINE Dave Allocca/startraks Julianne Moore and Bart Freundlich take pleasure in escorting 4-year-old daughter Liv to the newly renovated Coffee Shop in New York on a spring-like Wednesday. 13 of 15 SWEET CAROLINA Peter Goddard/Splash News Renée Zellweger uses her downtime in South Carolina to grab a cup of joe and a good read on Wednesday. The actress is on location filming the George Clooney football comedy Leatherheads. See more photos, news and a full bio of Renée Zellweger 14 of 15 CITY SLICKER INF From night to day, Lindsay Lohan stays on the move during her hometown visit to New York on Wednesday. See more photos, news and a full bio of Lindsay Lohan 15 of 15 WORKING GIRL DAVID LILLO/AFP/Getty Penélope Cruz meets the press in Santiago, Chile, on Wednesday, where the Volver star is reportedly in town to shoot a commercial for a department store campaign.