Halle Berry, Stacy Keibler, Mario Lopez and more host a  Run/Walk to raise money for women’s cancer research and treatment; James Franco curates a multimedia exhibition at the MOCA paying tribute to James Dean and his most classic film; Ben Affleck ponies up for Hank Azaria’s charity poker tournament in Westwood; “The Bachelor” Ben Flajnik brings his significant other, mother and sister for some serious Mother’s Day pampering at a rooftop event in Beverly Hills; Krysten Ritter and Shannon Elizabeth are on hand for the selection of the Swatch Art Rules contest winner and after party at Royal/T—it was a very full Mother’s Day weekend, and we’ve got all the details in this Monday edition of Last Night’s Parties! More»

Valentine's Day is over, so now we can all officially stop tweeting anti-sentimental quotes from Oscar Wilde and feeling bad about drinking alone. If you didn't have an evening filled with rose petals and Pizza Hut extravagances, don't feel bad. Loads of famous people were also not doing fancy Hallmark things. Instead, they checked out Tyler Perry's new flick,  congratulated Matt Groening on his Hollywood Walk of Fame star, and watched the Lakers win and/or Kobe and Vanessa gettin' it on. Come take a look at the different ways Los Angeles was buzzing on Tuesday in this edition of Last Night's Parties! More»

Rachel Zoe, Gwen Stefani in white lab coats

Kendall and Kylie Jenner, Decades boutique are the big winners at the Hollywood Style Awards; Pink shows off her new baby Willow with husband Carey Hart at the premiere of Happy Feet Two; Gwen Stefani wins our pick as best dressed of the weekend despite the mandatory lab coats at the annual MOCA Gala which was a strange affair by all accounts; Tilda Swinton, Sharon Stone help the Academy honor Oprah; Amy Adams and Jason Segel party with Miss Piggy at The Muppets Premiere; More»

Kate Hudson, Cameron Diaz, Drew Barrymore [via]

Michelle Williams, Jennifer Garner and more attend special screenings of their films showing in the 2011 AFI Fest; Robert Pattinson, Jon Hamm and more honor the work of those behind the scenes in entertainment; the first ever LACMA Art + Film gala co-hosted by Leonardo DiCaprio brings out one of the most star-studded crowds we've ever seen, with everyone from Zac Efron, Clint Eastwood and Zoe Saldana, to Stevie Wonder, Julian Schnabel and Jane Fonda—we, could keep going but we'll stop there, so come take a look at everything that went down this busy weekend in L.A. in a super-size edition of Last Night's Parties.

[Carson Kressley, Julianne Hough via] Music fans celebrate the legacy of Johnny Ramone with a graveyard punk rock show in Hollywood;  Hugh Jackman and Evangeline Lilly walk the red carpet for the premiere of their new movie Real Steel; The Black Keys give a show at Ron Burkle's house for Tony Hawk's Stand Up For Skateparks Benefit; More»

Olivia Wilde, Sandra Bullock, and Ryan Reynolds congregate in Westwood for an overdose of beautiful people at The Change-Up premiere and after party; Elle MacPherson, Nick Lachey, Sara Bareilles, Christina Applegate and a smattering of other stars kick off the NBC Press Tour with a party at the SLS Hotel in Beverly Hills—get all the details you need to know on Monday's hottest star-studded events in today's edition of Last Night's Parties. [Leslie Mann, Olivia Wilde, Jason Bateman, Ryan Reynolds photo via] More»

You know a house whose owners have the nerve to give it its own name has to be pretty fantastic.  That's probably why Jeffrey Deitch targeted Max and Lubov Azria's Holmby Hills estate, La Maison du Soleil, as the venue for the celebration of MOCA's new exhibition. It was certainly a fancy enough place to host a sophisticated artsy crowd for the the swanky, intimate affair. More»