Valentino and Marc Jacobs attended a fancy dinner for Jeff Koons with Tom Ford; Christina Aguilera, Corrine Bailey Rae, Jill Scott, Jennifer Hudson and more sang for Mary J. Blige; Broadway's best musicals were honored; Zach Braff showed his new film; and Ed Burns closed down the Tribeca Film Festival. This weekend was jam-packed!

Tom Ford Dinner For Jeff Koon's Pink Panther

Where: Sotheby's

Who Was There: Marc Jacobs, Lorenzo Martone, Jeff Koons, Aby Rosen, Chase Crawford, Jeffrey Dietch, Valentino, Terry Richardson

Other Details: Tom Ford hosted a special dinner for fancy types during an exhibition for Jeff Koons' famous "Pink Panther," which will be put on the  auction block May 10 and could sell for as much as $30 million. Marc Jacobs and Lorenzo came together and left together. Could this on-again-off-again couple be back on?  [Via]

Vera Wang Hosts a Special Screening of IFC Films' L'Amour Fou [More photos HERE]

Where: MoMA

Who Was There: Chef Todd English, Vera Wang, Martha Stewart, Gina Gershon, Kyle MacLachlan, Eve, Pierre Thoretton, Alex Wek, Desiree Gruber, Katie Lee

Other Details: Designer Vera Wang hosted a screening of this film which focuses on Yves Saint Laurent and his once-lover and longtime business partner, Pierre Berg. Together the pair collected a one-of-a- kind art collection that could rival the holdings of any gallery. Upon Saint Laurent’s death, Bergé decided to sell the collection that they had spent their lives amassing. Known as “The Auction of the Century,” this multi-million dollar sale heralded the end of an era. Take a look at more pictures from the evening HERE.

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2nd Annual Mary J. Blige Honors Concert

Where: Hammerstein Ballroom

Who Was There: Christina Aguilera, Jennifer Hudson, Mary J. Blige, Corinne Bailey Rae, Lala Vasquez Anthony, Kerry Washington, Ellen Pompeo, Evan Rachel Wood, Donna Karan, Russell Simmons

Other Details: Mary J Blige’s came out for her charity, FFAWN, to help fund programs to empower women to reach their full potential.  Queen Latifah played emcee and guests sipped Belvedere as Christina Aguilera, Corrine Bailey Rae, Jill Scott, Jennifer Hudson, Anita Baker and Mary J gave special performances. Donna Karan provided the decor.

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26th Annual Lucille Lortel Awards

Where: NYU Skirball Center

Who Was There: AnnaLynne McCord, Hilarie Burton, Zach Braff, Arian Moayed, Anson Mount, Donyale Werle, Kate Shindle, Anthony Rapp, Alex Timbers, Blythe Danner, John Collins, Ron Rifkin

Other Details: Lucille Lortel Awards for Outstanding Achievement Off-Broadway were handed out to recipients in 14 categories and 3 special awards. Bloody Bloody Andrew Jackson, Mike Birbiglia, and Gatz were a few to take home a prize. AnnaLynne McCord was in the house, wearing something described by the Daily Mail as "ultra trendy palazzo pants." never thought I;d see those words together in print. [Via]

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Stolichnaya Vodka Hosts The Tribeca Film Festival After-Party For A Good Old Fashioned Orgy

Where: Liberty Hall, Ace Hotel

Who Was There: Nick Kroll, Will Forte, Tyler Labine, Leslie Bibb, Lindsay Sloane and Lucy Punch as well as B.J. Novak,Lake Bell, Jason Sudeikis and Rachel Dratch

Other Details:SNL stars and other funny types came out for the after party of Good Old Fashion Orgy. Accoridng to Gatecrasher, Jason Sudekis was on a roll with the ladies.

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Janie Jones' Premiere After-Party At The Tribeca Film Festival Presented By American Express

Where: Marquee

Who Was There: Ethan Hawke, Alessandro Nivola, Abigail Breslin, Emily Mortimer

Other Details: At the after-party for janie Jones, both Abigail Breslin and Alessadnro Nivola got up and performed. They were suprisingly good.

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The New York Premiere of THE HIGH COST OF LIVING (After Party)

Where: Mondrian Soho

Who Was There: Deborah Chow, Isabelle Blias, Aleksa Palladinio, Danny Flaherty, Anthony LaPaglia, Kevin Manno, Zach Braff

Other Details: Zach Braff comeback? Perhaps. Even he looks shocked at the prospect. [Via]

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THE TRIBECA FILM FESTIVAL Closing Night Film of NEWLYWEDS

Where: BMCC/TPAC, M1-5

Who Was There: Robert DeNiro, Edward Burns, Christy Turlington Burns, Jane Rosenthal, Kerry Bishe Caitlin FitzGerald, Marsha Dietlein Bennett, Nicole Lapin, Selita Ebanks, Ben Rapaport

Other Details: After the film, which was shot on the streets of Tribeca with a $9,500 dollar budget, guests head to M1-5 to enjoy Heinken and Stoli, which taste like college, open bar for the LAST time. Thank god.  Ed Burns, who has great hair, was the man of the hour mingling around and charming just about everyone in the room. [Via]

World Premiere of "THE EDUCATION OF DEE DEE RICKS"

Where: Standard Hotel

Who Was There: Terrence Meck, Dee Dee Hicks, Ken Campbell, Holly Hammond, Dee Dee Ricks, Chris Meloni

Other Details: The documentary premiered as part of the Tribeca Film festival and will run on HBO in October. It tells the story of Dee Dee Ricks, a hedge fund consultant who lived for high-end shopping and the million-dollar deals that financed her family’s sprawling 65th-floor Manhattan apartment until her battle with cancer changed everything. [Via]

A BENT Event: Diggy Lloyd Photography Exhibition Hosted by William Vitiello and Peter Davis

Where: 579 Broadway

Who Was There: Caitlin Moe, Diggy Lloyd, DJ Mia Moretti, Mark Blackwell, William Vitiello, Tipton Horn, Diggy Lloyd, Peter Davis

Other Details: PAPER's editor-at-large Peter Davis along with William Vitiello,  hosted a photo show featuring the work of PAPERMAG photographer Diggy Llyod.  Mia Moretti and Caitlin Moe performed. [Via]

BEEFEATER GIN "Royal Wedding" Party hosted by LUCY & EUAN RELLIE

Where: DESMONDS Restaurant

Who Was There: Euan Rellie, Lucy Sykes Rellie, Hailey Lufpig, Stephen Prince,  David Hart, Allison Paris, Anya Kotova, Scott McGee, James Andrew, Gabriel Everett, Beth Amorosi, Martin Marks

Other Details: Lucy Sykes and Euan Rellie hosted a fun-filled evening to celebrate the union between Prince William and Kate Middleton. Cocktails were as English as they come, made with Beefeater gin. Cheers to the royal couple.