Since kicking off last Thursday, Fashion Week has been non-stop, and between the runways to the dinners to the after-parties, New Yorkers have been buzzing from dawn till dusk. Before Fashion Night Out kicked off the season, Proenza Schouler's Madison Avenue store opening and Brian Atwood's new ad campaign launch and the celebration of his first NYC flagship gave us a preview of the parties to come. But as the week went on, the parties got bigger, better, and more exclusive. From the much-anticipated launch of Carine Roitfeld's CR Fashion Book, to Lady Gaga closing the week with an art piece performance at the Guggenheim, here are the top ten parties of New York's S/S 2013 Fashion Week!

[Heidi Klum, Brian Atwood, Rachel Zoe]

Designer Brian Atwood kicked off New York Fashion Week last night with a cocktail hour and dinner event presented by DeLeon Tequila to celebrate the success of his new campaign and the first Fall 2012 NYC Flagship store opening. The dinner was held at the Four Seasons Restaurant in NYC. Guests enjoyed a raw bar and hand-spun cotton candy while sipping on hand-crafted cocktails like The Maniac, The Sex is in the Heel, Midnight Purple, and The Atwood, all from DeLeon Tequila. 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»

Go HERE for more photos by Casandra Campeas and tag yourself and your friends!

How do cool parents celebrate Earth Day with their kids? With live performances by very famous musicians, edible art projects, fossil digs, manicures and DJ lessons on the beach in L.A., as was the case at the book launch of Last Night I Swam With A Mermaid yesterday at the Annenberg Community Beach House where hip moms and dads like Julie Bowen, Jason Bateman, Johnny Knoxville and others stepped out for the family friendly occasion. More»