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»

Common performs for Olivia Munn and Kim Kardashian to celebrate the USA Basketball team and Jeep; Will Ferrell, Michael Chow and other big supporters of LACMA attend the annual Collectors Committee dinner gala and view the new works of the permanent collection; Tobey Maguire, Ben Affleck and more show support for arts education at the Children Mending Hearts Spring Benefit; Ian Somerhalder hosts a private charity dinner event in Bel Air; Johnny Knoxville, Julie Bowen and Anthony Kiedis celebrate Earth Day at the Annenberg Community Beach House—it was another busy weekend of events and fundraisers here in L.A. and we have the details on what went down in this edition of Last Night's Parties. More»

[Kirsten Dunst, Elle Fanning via] Emily Blunt, Kate Beckinsale and Colin Firth have date night at the opening of Stephen Merchant's new comedy show on La Cienega; Elle Fanning hosts an intimate dinner at Chateau honoring the Rodarte sisters with Kirsten Dunst, Sophia Coppola and others as guests; The Butterfly Gala takes over the SLS for a night of fashion appreciation and cocktails to benefit Children's Hospital Los Angeles—while most were still pooped from the Golden Globes, see which notables made it out to play last night around town in this edition of Last Night's Parties. More»

Last night, Jessica Biel, Ashton Kutcher, Lea Michele and every single actor in the history of time attended the premiere of New Year's Eve, Valentino celebrated the launch of their virtual museum with SJP and Courtney Love, Mark Ronson and Phantogram hit the stage at the W Hotel Downtown and so much more. Last night's parties were all about the celebs. More»

Go HERE for more pictures by Hannah Palmer Egan and tag yourself and your friends!

Pirelli celebrated the global launch of its 2012 Pirelli Calendar by Mario Sorrenti with a gala dinner last night at the Park Avenue Armory. More»

Over the weekend Art Basel Miami partied hard, with Sean “Diddy” Combs, Adrien Brody and Will Smith celebrating Culo by Mazzucco, Daphne Guinness got a preview of Visionaire 62: Rio as the Mishapes spun, TV on the Radio, Kalup Linzy, and Moby all performed, Andre Balazs got his finger nails painted, Tilda Swinton hung out at Pringle of Scotland -- plus, The Westway, Le Baron, and The Electric Room came to Miami and so much more.

Last night Louis Vuitton partied at the Soho Beach House with Owen Wilson and Adrien Brody, The Hole presented Salem at the Water Station, MOCA held a beach party, Johan Lindeberg introduced BLK DNM's first fragrance at the Webster Miami, W Magazine held a dinner, Seth Browarnik celebrated his Art of Night Exhibit at Shelborne South Beach and more! Check out what's been going on at Art Basel:

[Photos by Billy Farrell for PMc].

Last night contemporary art Guru Larry Gagosian hosted a private dinner and cocktail party with attendees Adrien Brody, Diane von Furstenberg and Steve Martin helping to celebrate a new exhibition of Andreas Gursky's work.    More»

[All photos by WILL RAGOZZINO for PMc]. Last night at the hip Lehmann Maupin Gallery, art lovers gathered to celebrate Tracy Emin's latest American exhibit, "Only God Knows I'm Good". The exhibition is comprised of 53 works all following the themes of love, sex and lust. More»

[All photos by JOE SCHILDHORN for PMc].

Last night, the hottest room in the city played host to its hottest guests. The Boom Boom Room was booming last night. It was (yet another) celebration of the DVD release of VALENTINO: The Last Emperor, but let's be honest, it was really just a chance to dance next to Madonna. Hosted by Giancarlo Giammetti, Director Matthew Tyrnauer, and Jesus Luz, it was the party to see and be seen at. Read who stopped by below... More»

[All photos by CHANCE YEH for PMc].
Last night at Mr. Chow NYC, famous fans of the restaurant brand, including Mischa Barton, Olivia Palermo, Brooke Shields, and Hamish Bowles came out to celebrate it's 30th Anniversary.  More»