Last night in NYC, Donatella Versace presented the New Versus Versace to a star-studded crowd, including Heidi Klum, Taylor Momsen, and Mena Suvari, HRH Prince Harry of Wales scored the winning goal at the Sentebale Polo Cup, Elle Editor-in-Chief Robbie Myers hosted an intimate dinner for Kerry Washington to celebrate her as June Elle’s cover girl, and so much more!

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!

Over the weekend in NYC, Domenico Dolce and Stefano Gabbana celebrated the opening of the new Dolce & Gabbana boutique with a star-studded bash hosted by Giovanna Battaglia, Miranda Kerr and Karolina Kurkova headed over to Net-A-Porter.com's lavish party at Omar's, Leonardo DiCaprio, Baz Luhrmann, and Carey Mulligan partied at the Top of the Standard for "The Great Gatsby" after party, 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.

Last night in NYC, James Franco hit up the NYC screening of his new film "Oz The Great and Powerful" with long-time friends Petra Nemcova and Emmy Rossum, Leelee Sobieski and Peter Brant helped kick off the Art Show with the Gala Preview hosted by the Art Dealers Association of America, Tina Fey joined co-star Paul Rudd at the premiere of "Admission," and so much more!

Last night in NYC, Swedish House Mafia kicked off their 5-day takeover with the Black Tie Rave at the Hammerstein Ballroom, Ben Pundole hosted a party at ACME to celebrate the launch of his new comprehensive travel site, A Hotel Life, Jessica Hart and Peter Brant Jr. attended the Child Mind Institute Art Auction at Sotheby's, and so much more!

Last night in NYC, Marquee finally reopened its doors (after a year of renovations, we can confirm that the Chelsea club is better than we remembered), Diane von Furstenberg and Zac Posen came out for Lola Montes Schnabel's "Within Reach" opening reception, Brian Clark debuted his new Pace Gallery exhibition, and so much more!

[Amanda Hearst, Georgina Bloomberg] [Alexa Chung, Cynthia Rowley, Derek Blasberg] [Waris Ahluwalia, Laure Heriard Dubreuil]

Last night in NYC, Derek Blasberg invited his friends to the St. Regis Hotel for afternoon tea to celebrate the launch of his new stationery collaboration with Opening Ceremony, Mayor Bloomberg stepped out with his daughter Georgina for the Humane Society's "To The Rescue" gala, Uma Thurman attended the 10th Annual Benefit Auction at Christie's, and so much more!

[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!

[Calvin Klein, Stella McCartney] [Harry Brant, Karlie Kloss, Peter Brant Jr.]

If you couldn't make down to Miami for Art Basel this year, we've got you covered. Thanks to Instagram, you can stay in the know and get up to date coverage of all of the hottest happenings. From parties to galleries, and everything in between, these are the industry insiders you should be following for instant access to the best of Art Basel. More>>

[Calvin Klein, Stella McCartney] [Dasha Zhukova, Demi Moore] [Harry Brant, Karlie Kloss, Peter Brant Jr.]

If you couldn't make down to Miami for Art Basel this year, we've got you covered. Thanks to Instagram, you can stay in the know and get up to date coverage of all of the hottest happenings. From parties to galleries, and everything in between, these are the industry insiders you should be following for instant access to the best of Art Basel.