Hailee Steinfeld, Sarah Hyland Chord Overstreet and other young stars party with Teen Vogue at the New York City lot at Paramount Studios; Olivia Wilde, Demi Moore, Annette Bening and several other powerful figures in Hollywood do lunch in Beverly Hills; Aaron Paul, Cindy Crawford, Vanessa Hudgens and more hit the world premiere of the new Cirque Du Soleil show; Jon Hamm, Christina Hendricks and the rest of the "Mad Men" cast host a brunch for The Rape Treatment Center; half of Hollywood steps out for the Hammer Museum's famous Gala in the Garden; Anna Paquin and Stephen Moyer attend the Point Honors Los Angeles Gala hosted by Joel McHale—it was a fully-loaded weekend of high end events we're getting exhausted just thinking about and we have all the important details on what went down in this edition of Last Night's Parties. [Gala in the Garden photo via]

AnnaLynne Mccord Gina Gershon Demi Moore david lachapelle Amy Astley Will Ferrell Kate Beckinsale Kim Raver Teen Vogue Angela Lansbury Jack Black James Gandolfini Hugh Jackman Ricki Lake Rye Rye Mark Bradford Mary J. Blige Cindy Crawford Jon Favreau Eva Longoria Anna Paquin Neil Patrick Harris lea michele Jason Behr Dana Delany Annette Bening Matthew McConaughey Mad Men Vanessa Hudgens True Blood Stephen Moyer Anne Heche Debby Ryan Shenae Grimes Jessica Lowndes Teen Vogue Young Hollywood Party Romeo Lisa Love John Slattery Vincent Kartheiser Frank Gehry Jennifer Love Hewitt Beverly Wilshire Hotel Patrick Dempsey Olivia Wilde Jon Hamm Rande Gerber Elisabeth Moss James Cameron Warren Beatty Dianna Agron Christina Hendricks Solange Knowles Kate Mulleavy Laura Mulleavy Jennifer Westfeldt Cirque du Soleil Aaron Paul Camila Alves net-a-porter.com Brie Larson Coach Bryan Singer Antonio Villaraigosa Jeffrey Katzenberg Joel McHale Camryn Manheim Adam Shankman jeffrey deitch Noa Tishby Hayley Hasselhoff Sarah Hyland Geoffrey Arend Paramount Studios Zelda Williams Allison Janney Harry Shum Jr. NYC Paramount Lot JoJo Amber Lancaster Thomas Jane Christina Milian Chloe MOretz Dave Muller Christopher Knight Joe Manganiello Jasmine V Julia Sorkin Jason Ritter Monique Lhuillier Wendy Stark Morrissey Bruno Mars Chord Overstreet Hailee Steinfeld Kevin Dillon Ed Ruscha Rex Lee Cassie Scerbo Mario Lopez