On Monday night, legions of fashion followers and celebrities like Bernadette Peters, Hailee Steinfeld and Perez Hilton trekked to the Financial District to celebrate the 25th anniversary of DKNY. The cavernous space was full of swirling, colorful lights and enough couches to comfortably lounge on, but make no mistake: this party was all about the musical performances.First, Rita Ora took the stage, singing her heart out and gently teasing the crowd before welcoming Iggy Azalea to give a surprise performance. After bringing out a big cake in the shape of -- what else? -- a New York taxicab, the audience serenaded Donna Karan herself before she and her muses had a big ol' cake fight. The night ended with a performance by A$AP Rocky and A$AP Ferg and oh boy, was it a good one. Check out the photos below -- and happy belated, DKNY!

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