This week's parties made art students out of the social set. On Monday, the lens was turned on photographers at the International Center of Photography's Infinity Awards. Julianne Moore, Inez van Lamsweerde, Vinoodh Matadin, Sean Lennon and Kelly and Calvin Klein all made their way to Pier 60 for the event.

Though Karl Lagerfeld and William Klein were happy to get the ICP Trustees Award and the Lifetime Achievement award, respectively — both men pined for another.

"I'm still a young photographer," joked Lagerfeld, though that distinction went to Ryan McGinley. Klein lamented: "I asked them if I could have that one instead."

Uptown, it was all about the art of the dance. "One day I'm going to grow up and be a ballerina," sighed honorary co-chair Blaine Trump after watching the performances at the American Ballet Theatre's Spring Gala at Lincoln Center.

The dinner afterward attracted a group of balletomanes including honorary co-chair Caroline Kennedy, Isabella Rossellini, Chelsea Clinton, Susan Fales-Hill, Sarah Ferguson, Grace Hightower (with husband Robert De Niro) and co-chair Carolina Herrera.

The gala even drew Peter Bacanovic out of the woodwork. "This is my favorite night of the year," he enthused.

On Tuesday night, ladies broke out their most floral finery for the Museum of Modern Art's annual Party in the Garden, honoring Debra and Leon Black and Martin Scorsese. Guests including Aerin and Jane Lauder, Clarissa Bronfman, Carroll Petrie and Marie Josée-Kravis dressed in brights of every rainbow hue.

Guest of honor Scorsese was fashionable too — fashionably late. The famed director is hard at work on a documentary about the Rolling Stones. "I came straight from the editing room, not the house," he said. "I was just in the middle of something, and then was told I had to get dressed."