Isaac Mizrahi, Luann de Lesseps attend Bergh Ball in NYC (7 images)

Isaac Mizrahi and Luann de Lesseps attend the 21st Annual Bergh Ball hosted by the ASPCA on Thursday in New York City. The ball raises critical funds to support the ASPCA’s life-saving work for animals nationwide. Photos by John Angelillo/UPI

Fashion designer and emcee Isaac Mizrahi arrives on the red carpet with a puppy.

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Luann de Lesseps of the Real Housewives of New York arrives on the red carpet with a puppy.

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Model Jessica Hart arrives on the red carpet with a puppy.

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Model Constance Jablonski arrives in Carolina Herrera.

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