Over the weekend in NYC, Leonardo DiCaprio, Owen Wilson, and others made their way to Greenwich for The Brant Foundation Art Study Center Preview, James Franco joined Maggie Gyllenhaal for dinner at the MoMA to celebrate the opening of Expo 1: New York, Tiesto helped launch the Visionaire 63 FOREVER issue with G-Shock at The Clocktower, and so much more!

Jennifer Lawrence and Leonardo DiCaprio toast champagne while Charlize Theron and Bill Clinton trade fedoras backstage at the GLAAD Media Awards; Demetri Martin and Molly Ringwald debut their tomes at the Festival of Books; David Arquette and James Van Der Beek attend the Ballet Rubies Gala; Jeffrey Deitch, Ellen Pompeo and Terry Richardson hit up the "Yesssss!" 2013 MOCA Gala; the brothers Hemsworth aren't too cool for school at the City Year Los Angeles' Spring Break: Destination Education Party—were you at Coachella Weekend 2? These celebs weren't either. Check them all out at L.A.'s top events in this weekend edition of Last Night's Parties.

It was a great night for premium party hopping in L.A. on Saturday. Following DIESEL + EDUN's stellar Studio Africa BBQ with a private Solange concert, guests migrated east to Milk Studios where Purple Fashion Magazine hosted a celebration for its Spring/Summer 2013 issue release. With Becka Diamond manning the ones and twos, the champagne-filled night drew an eclectic mix of artists, models, designers, celebrities and local tastemakers. Among the notables who joined Purple founder Olivier Zahm to celebrate were Chloe Sevigny, Jeffrey Deitch, Alexander Skarsgard, Paz De La Huerta, Andrej Pejic, Frankie Rayder, Estella Warren, Randall Slavin and many others. Check out the slideshow for a look at guests letting their hair down inside the exclusive event. More>>

It was a great night for premium party hopping in L.A. on Saturday. Following DIESEL + EDUN's stellar Studio Africa BBQ with a private Solange concert, guests migrated east to Milk Studios where Purple Fashion Magazine hosted a celebration for its Spring/Summer 2013 issue release. With Becka Diamond manning the ones and twos, the champagne-filled night drew an eclectic mix of artists, models, designers, celebrities and local tastemakers. Among the notables who joined Purple founder Olivier Zahm to celebrate were Chloe Sevigny, Jeffrey Deitch, Alexander Skarsgard, Paz De La Huerta, Andrej Pejic, Frankie Rayder, Estella Warren, Randall Slavin and many others. Check out the slideshow for a look at guests letting their hair down inside the exclusive event... [All photos by Steven Meiers for Commedesfuckdown.com]

Johnny Depp, Katy Perry, Selena Gomez, Kristen Stewart and many other young faces in Hollywood attend Nickelodeon's Kids' Choice Awards; Solange performs at the Diesel + Edun Studio Africa event at Ron Herman; Kerry Washington and Lance Bass are among the guests at the Human Rights Campaign Los Angeles Gala Dinner; Brad Goreski and Whitney Port sit on a panel at the 2nd Annual Simply Stylist L.A. fashion and beauty event; Chloe Sevigny, Alexander Skarsgard, Jeffrey Deitch and a slew of others join Olivier Zahm for a Purple Magazine party—get caught up on L.A.'s top weekend events in today's edition of Last Night's Parties.

[Clockwise from top left: Mario Testino, Gisele Bundchen, Zac Posen; Karolina Kurkova, Naomi Campbell, Mario Testino, Gisele Bundchen; Alessandra Ambrosio, Mario Testino, Erin Wasson]

On the eve of the Oscars, PC Valmorbida and Jared Najjar's PRISM gallery hosted an exclusive opening preview for Mario Testino, the eponymous exhibition by the world famous fashion photographer now on display. The Sunset Strip gallery was swarming with models, artists, designers, actors and an overall exceptionally good-looking crowd for the event, later followed by a wild after party co-hosted by Gisele Bundchen at the Fleur de Lys mansion in Beverly Hills. Mario Testino should seriously come to town more often because even by L.A. standards, the night was quite a spectacle with supermodels everywhere (kiss, kiss Karolina and Naomi!) and lots of getting down on the dance floor. Take a look and see for yourself. [All photos by David X Prutting / BFA]

[Kim Kardashian, Kanye West] [Andre Balazs, Chelsea Handler] [Andre Saraiva] [Donna Karan, Demi Moore via BFA]

Last night in Miami, Kanye took Kim and Kourtney out last night to OHWOW's "It Ain't Fair" dinner at the Webster and to Dom Perignon Luminous Rose launch, the Andres -- Balazs and Saraiva-- were at it again with their one-night Chez Andre pop up, Bruce Weber celebrated his book launch with Chelsea Handler and Calvin Klein at The Standard in Miami, and more!

The Miami Art Basel is a premiere destination for contemporary art collectors and art lovers worldwide. It's the perfect place for buyers and sellers to mingle, party, and escape the winter gloom. The weekend is definitely not all play, but there are some amazing events and parties to make up for that. Here is our guide to the music scene in Miami this week. We've picked out a few performances you won't want to miss, including ones by Araabmuzic, Hundred Waters, Twin Shadow, Purity Ring, and Teengirl Fantasy. More»

[Lenny Kravitz, Demi Moore] [Laura de Gunzburg, Vladimir Restoin Roitfeld] [Chelsea Leyland, Laure Heriard Dubreuil, Sophia Sanchez]

Last night in Miami, Demi Moore and Lenny Kravitz got cozy in the VIP area at Soho Beach House for Chanel's beachside BBQ, Laure Heriard Dubreuil hosted a cocktail party for the Interview & Valentino Pop Pois collection, Bruce Weber stepped out for the world premiere of his film Can I Make Music Fly, and more!

[Jason Wu, Arizona Muse, Thakoon Panichgul] [Peter Som, Allison Williams, Richard Chai, Christina Ricci]

Last night in NYC, Alexa Chung, Emma Stone, Anna Wintour, and others stepped out for the 9th Annual CFDA/Vogue Fashion Fund Awards, Anne Hathaway hosted the Women Media Center Awards, Andy Valmorbida and PM Tenore presented the Todd James and Alexis Ross Opening at 560 Washington Street, and more!

Taryn Manning, Ashlan Gorse and more attend the Inspiration Awards For Women Gala; costars Kristen Stewart, Amy Adams and Garrett Hedlund premiere On The Road at AFI Fest; Nicole Richie, Ali Larter, Jessica Alba, Rachel Zoe and more step out for the Baby2Baby Gala; Russell Brand, Chris Rock, Samuel L. Jackson and many others help pay tribute to Eddie Murphy; Dita Von Teese and Chloe Sevigny are joined by other L.A. fashionistas for the debut of Liz Goldwyn's The Painted Lady short—get the rundown on the weekend's top events and who attended them in this installment of Last Night's Parties.