Molly Sims

Gwyneth Paltrow and Kim Kardashian joined up yesterday to celebrate the launch of celebrity trainer Tracy Anderson's new flagship studio in Brentwood. She wore a purple Victoria Beckham dress and Michael Kors shoes as she lent her support to her longtime friend. Gwyneth spoke with us at the event and shared one of her motivation secrets for getting into workout mode. She said, "I just sob and kick and scream and then just force myself to do it." Gwyneth isn't the only fan of Tracy's intense workouts — Kim has said that she is working out with Tracy throughout her pregnancy so she can stay active and healthy. Other stars like Molly Sims and Stacy Keibler also showed their support for Tracy and her famous fitness method at the launch.

If you want to win a chance to chat with Gwyneth in person, be sure to enter our I'm a Huge Fan: Gwyneth Paltrow contest for an opportunity to interview her in LA!

Identity Thief stars Melissa McCarthy and Jason Bateman attended their LA premiere at Mann Village Theatre last night. Both hit the red carpet with their spouses on their arms — Jason posed with his wife, Amanda Anka, and Melissa shared a kiss with her husband, Ben Falcone. Jason and Melissa also stayed close on the carpet, showing off their good friendship. Recently, Jason told us he specifically asked Melissa to star in Identity Thief because he was excited to work with her.

Jason and Melissa's costars turned out too. T.I. brought along his wife, Tameka "Tiny" Cottle, while Genesis Rodriguez wore a floor-length Raoul green gown and Amanda Peet rocked an LBD. Molly Sims, whose husband, Scott Stuber, was one of the film's producers, smiled big for the cameras as well. The big night out, which included an afterparty, comes just a few days ahead of Identity Thief's release this Friday, Feb. 8.

Rachel Zoe hit the black carpet in LA last night to celebrate Valentino's 50th anniversary at its shop on Rodeo Drive. She stopped for a moment to say hello to pal Molly Sims, who covered her growing stomach in a long black gown. Molly, who married producer Scott Stuber in September, is six months pregnant with her first child. She and Scott expect their first bundle of joy to arrive in June. Molly and Rachel shared space on the carpet with a Lela Rose-clad Kim Kardashian, as well as other starlets like Jessica Stroup, Jessica Szohr, and Ciara. Rachel is a well-known Twilight fan, but she took a second to say hello to an actress from another major movie franchise. The Hunger Games' Isabelle Fuhrman caught up with Rachel Zoe at the dinner, and the young actress later tweeted that she was "so happy to have met such amazing people" at Valentino's event.

Stars came out to support UNICEF at its Playlist With the A-List event benefiting Schools For Africa in LA last night. Kristen Bell, Heidi Klum, and Molly Sims were among the guests that took the stage to perform during the fundraiser, which also included a live auction. Things got goofy when Heidi, Tom Hanks, and Rita Wilson danced in the crowd and sang "YMCA" while wearing hats. Pregnant Molly kept the fun coming as she belted out tunes before Kristen, who wore a polka-dot look from Topshop, took the mic with the help of Molly Shannon and Don Cheadle.

Don't forget you can zoom in to see all the awesome pictures in the gallery up close!

Amy Adams, Malin Akerman, and Jessica Chastain were among the stars who turned out for a Vanity Fair and Juicy Couture bash last night at LA's Siren Studios. Shailene Woodley hosted the party as well, as it was held to benefit her All It Takes charity. Many of the attendees are on the front of Vanity Fair's young Hollywood issue, including Jessica, Shailene, and Paula Patton.

The red carpet also brought out Hayden Panettiere, Anna Kendrick, Stacy Keibler, Kate Mara, and a pregnant Molly Sims. Jessica turned heads while posing for the photographers thanks to her plunging dress from Alexander McQueen. Amy kept things simple in a dark ensemble, while Malin upped the glam factor in black and white J.Mendel.

Ryan Reynolds and Denzel Washington teamed up last night for their NYC premiere of Safe House. Denzel posed on the red carpet with his wife Pauletta, though Ryan's real-life leading lady, Blake Lively, sat the event out. A pregnant Molly Sims stepped out for the screening, showing off her baby bump alongside husband Scott Stuber. There has been lots of time for Ryan and Denzel to bond over the last few weeks as they promoted the film. They even took a quick trip to Spain, where they had a photocall and a fun visit to the set of El Hormiguero. Ryan and Denzel filmed the picture last Spring and Summer in South Africa. They'll see if all the hard work pays off when the movie hits theaters this Friday on Feb. 10.

Rachel Bilson, Kirsten Dunst, and Minka Kelly stepped up their fashion game last night at LA's Union Station in support of the Art of Elysium's annual Heaven Gala. Rachel, dressed in a frock from Chanel's Spring 2012 collection, arrived solo, though she later met up with her Hart of Dixie costar Jaime King, who was wearing Valentino. Minka selected a bright Oscar de la Renta gown for the occasion while actress Camilla Belle modeled a bold Carolina Herrera. Newlywed Molly Sims hit the red carpet with her husband, Scott Stuber, in a coral grecian gown. The mom-to-be posed with her hand on her growing baby bump and then stopped to share a hug with stylist Brad Goreski. Brad told us he's hoping all of his clients make the best-dressed list at tomorrow's Golden Globe ceremony, and he can't wait to return to NYC for the upcoming 2012 Fall Fashion Week.

Busy Philipps arrived in a beaded gown and told us the evening's ethereal theme inspired her final dress decision. Tomorrow she'll be accompanying best actress nominee Michelle Williams to the Globes and said she'll have her "fingers crossed" when Michelle's category is announced. Singer Estelle kept the crowd entertained during the celebration in addition to a vintage couture fashion show sponsored by Decades. The gala, celebrating its fifth year, was originally created to celebrate artists who dedicate their time to children battling serious illness. Kirsten Dunst, in a black Valentino, was previously recognized for her philanthropic work with the charity, and this year that honor was bestowed on The Hobbit's Elijah Wood. Elijah took the stage and thanked the organization, saying, "It has enriched my life to be a part of this tirelessly dedicated family and the lives of the children they've transformed."

Rachel Zoe paid a visit to Piperlime's Piping Hot Lounge in NYC yesterday. The afternoon event was organized so that Rachel could show off some of the "Piping Hot Picks" she selected for the online retailer. Rachel selected bags and shoes, and the latter category is one in which she has a great deal of authority. Rachel received the footwear new launch of the year award on Tuesday night, as did her friend and fellow designer Brian Atwood.

Joining the superstylist at Piperlime was Molly Sims, who was decked out in the Cheryl coat from the Rachel Zoe Collection. Molly's back in the Big Apple after a fun Thanksgiving spent in Cabo with husband Scott Stuber and their pals George Clooney and Stacy Keibler. Molly has been out and about, chatting up her new series, Project Accessory, and, in a recent interview, revealed her style icon. Molly admires Sarah Jessica Parker's look and said, "I love that she'll wear a great dress on and then put on a crazy Philip Treacy hat. She's never safe, but she always keeps it ladylike. She's not the kind of risk-taker that'll show her butt crack."

Reese Witherspoon reunited with her Mud costar Matthew McConaughey at last night's Art Mere/Art Pere benefit for Lance Armstrong's Livestrong Foundation in LA. She posed for photos solo on the Corzo, JetBlue, and OpenSky-sponsored red carpet before heading in to mingle and meet up with her husband, Jim Toth, whose father, James Toth, Sr., was being honored. Matthew was happy to take pictures with an arm around his partner Camila Alves, as newlyweds Amy Smart and Carter Oosterhouse did the same. Funny people Melissa McCarthy, Aubrey Plaza, and Aziz Ansari made the rounds too, and the girls stopped for a photo with Dexter's Colin Hanks. We snagged a moment with Melissa on the red carpet, and while she admitted to being thrilled with the acting opportunities coming her way, she said she's really hoping for a cameo on Yo Gabba Gabba to impress her kids. A tanned and fresh-from-her-honeymoon Molly Sims also checked out the live and silent auctions along with Entourage duo Perrey Reeves and Jeremy Piven.