Leslie Mann

HBO's new series Girls premiered at the School of Visual Arts Theater in NYC. The series is the brainchild of Lena Dunham, whose first big movie Tiny Furniture debuted in 2010. The film caught the eye of Judd Apatow, who reached out to Lena to see if she needed help with any projects. Their friendship helped bring Girls to TV, and Judd worked closely with Lena on the 10 episodes of the first season. The program centers around the friendships of four ladies living in NYC, and the plot has raised some inevitable comparisons to HBO's other landmark series about Big Apple women — Sex and the City. Girls, though, is a grittier look at the lives of 20-somethings and the mistakes they make, both personally and professionally.

Lena also stars in the show, along with Allison Williams, Zosia Mamet, and Jemima Kirke. Plenty of famous friends came out to support the cast, including a Preen-clad Claire Danes, Kyra Sedgwick, and Kevin Bacon. Allison, whose father is NBC's Brian Williams, wore a gorgeous white Donna Karan dress and Kwiat jewels. Zosia also has a well-known dad, writer David Mamet, and Jemima's father was in the band Bad Company! Brian and his wife Jane swung by the afterparty at the Standard Hotel.

Lena spoke to us last night about when Judd first reached out to her. She said, "I thought that it was a prank when Judd first got in touch with me. I thought my friend Isabel was emailing me using this weird technology that lets you pretend your email address is someone else's email address!" The affection is certainly mutual between Lena and Judd. He raved of Lena, "She's so funny, and she has a unique vision." Check out our full red-carpet report later today on PopSugar Rush.

Jennifer Aniston wore Tom Ford to last night's big LA premiere of Wanderlust. She shared hugs on the red carpet with costars Paul Rudd and Malin Akerman, as well as producer Judd Apatow and his wife Leslie Mann. However, Jennifer seemed to keep her distance from boyfriend Justin Theroux. Jen and Justin weren't photographed together at all throughout the evening, but both were still wearing their personalized "Jennifer" and "Justin" name rings. They even managed to stay a few feet apart during the afterparty at Napa Valley Grille. Justin caught up with Paul and his wife Missy Yager at the bash, while Jennifer hung out with Universal Pictures president Ron Meyer. We were on the scene last night at Hollywood's Mann Village Theatre, so stayed tuned later for our report from the screening.

The stars of The Change-Up like Ryan Reynolds, Jason Bateman, and Leslie Mann gathered in LA last night for the West Coast premiere. Olivia Wilde rounded out the cast of actors who hit the red carpet outside the Regency Village Theatre. There was a special surprise in store — Sandra Bullock, in Lanvin, made a rare appearance to support her good buddy Ryan! Jason, meanwhile, had his wife Amanda Anka on hand for the premiere and afterparty at the Hammer Museum, and Leslie was next to her husband Judd Apatow. Leslie wore Marchesa for the first part of the evening then changed into Monique Lhuillier for the bash. Olivia picked a red Antonio Berardi before putting on a star-embellished frock for the end of the night. We managed to snag a few minutes with the bold-faced names before they headed into the screening. Olivia spoke about how funny the guys were on set, while Jason and Ryan revealed that they've been friends for 15 years and have been waiting to do a project together. Stay tuned for more later today on PopSugar Rush!

Jason Segel and Leslie Mann were hard at work filming scenes for the new Judd Apatow movie yesterday in LA. The costars didn't exactly keep straight faces, as Jason, who plays a personal trainer, coached Leslie through a few ridiculous ab workouts. The film, which was briefly titled This Is Forty, also stars Megan Fox and Bridesmaids actress Melissa McCarthy. The picture revisits the characters that Leslie and Paul Rudd initially played in Knocked Up. Jason Segel has talked about losing weight recently, and took the opportunity to flex his newly revealed biceps in front of Leslie on the set. Jason, who has a cameo in Friends With Benefits, is back to work with the Apatow gang again after shooting The Five Year Engagement in Michigan with costars including Emily Blunt and Mindy Kaling.

Katie Holmes was the center of attention at a Vanity Fair and MaxMara dinner in LA last night. She was honored with Women in Film's MaxMara Face of the Future award, and hit the red carpet in a navy pantsuit from the brand. Twilight stars Anna Kendrick and Ashley Greene were also on hand for the event, as was Something Borrowed's leading man Colin Egglesfield. Katie attended the MaxMara fashion show in Milan earlier this year with her mom, Kathleen, and design partner Jeanne Yang following the announcement that she had been selected as the recipient of the annual prize. She has to wait until Friday's Crystal + Lucy awards, though, to officially pick up the statue. Katie was dressed down for a coffee run with Jeanne earlier in the day, after spending much of the week with her daughter, Suri Cruise, by her side.

Ryan Reynolds kept the good times rolling last night with a bash at LA's Dominick's restaurant to celebrate his July 2011 issue of Details. It was the actor's second evening out on the town in a row after attending the MTV Movie Awards on Sunday with his Green Lantern leading lady Blake Lively, but she wasn't on hand for yesterday's party. Instead, Ryan cozied up to his costars in The Change-Up, Leslie Mann and Olivia Wilde. Jason Bateman, another lead in the upcoming comedy about two friends who find themselves in each other's bodies, also let loose with Leslie's director husband Judd Apatow. Olivia made the rounds without her rumored love interest Bradley Cooper, who will actually play opposite her in the upcoming movie The Words. The Summer is shaping up to be a busy season for Ryan, since his film with Blake hits theaters on June 17. He, Olivia, Jason, and Leslie won't debut their final product until Aug. 5, but Ryan will be busy in the interim with interviews and prepping to start work on projects like Deadpool and R.I.P.D.