Last night in NYC, Kate Hudson brought fiance Matthew Bellamy with her to the Breast Cancer Research Foundation's annual Hot Pink Party, Liza Minelli and Robert De Niro kicked off the 2013 Tribeca Film Festival with the world premiere of "Mistaken for Strangers," Neil Patrick Harris and Jesse Tyler Ferguson came out to Calvin Klein with their partners to support the Americans for Marriage Equality Campaign, and more!

The Guest List

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Zac Posen• Cipriani• Daniel Benedict• Madison Square Garden• Countess Luann de Lesseps• Elton John• Riley Keough• Martha Stewart• Charlotte Ronson• Elizabeth Hurley• Emma Snowdon-Jones• Richard Belzer• Robert De Niro• Ann Dexter-Jones• hillary clinton• Genevieve Jones• Bill Cunningham• Calvin Klein Collection• Michael Kors• donna karan• Amy Astley• Francisco Costa• Jared Kushner• Meredith Melling Burke• Allison Sarofim• Vera Wang• Alan Cumming• Le Baron• Waldorf Astoria• Gayle King• Andrew Saffir• Lisa Anastos• Andy Cohen• Nate Berkus• Alina Cho• Jill Kargman• Uma Thurman• Jane Rosenthal• Josh Lucas• Tom Murry• Kate Hudson• Drew Nieporent• Jerry Seinfeld• Leonard Lauder• Linda Fargo• Jonathan Tisch• Gillian Miniter• Grace Hightower• Stacey Bendet• John Demsey• Nicole Trunfio• Neil Patrick Harris• Ali Wise• Hal Rubenstein• DJ Coleman• Lizzie Tisch• Jessica Lucas• Tommy Saleh• Laura Brown• James Marshall• Chelsea Leyland• Italo Zucchelli• Eli Mizrahi• Christiane Amanpour• Lloyd Blankfein• Stefano Tonchi• Claire Bernard• Ken Friedman• Cory BOnd• April Bloomfield• Ron Delsener• Karlie Kloss• Emily Weiss• Garance Dore• Ladyfag• Elettra Wiedemann• Josh Radnor• Sylvester Miniter• Ahn Duong• Heather Thomson• Cristina Cuomo• Jesse Tyler Ferguson• Maria Cornejo• Constance Jablonski• Matt Berninger• Ingrid Sischy• Mirte Maas• The Spotted Pig• Naomi Thomas• Jay Errico• Anouck Lepere• Liza Minnelli• Alyssa Miller• Paul Haggis• Ellsworth Kelly• Ari Graynor• Nora Zehetner• Christina Tosi• Tory Burch