PHOTO GALLERY: The 2009 Angel Ball

Celebrities did their part to battle leukemia on Tuesday night, as Gabrielle’s Angel Foundation held its annual Angel Ball at Cipriani Wall Street in New York.

Jennifer Hudson, Blake Lively, Penn Badgley, Bar Refaeli and a host of other luminaries showed up for the charity gala, which featured performances by Robin Thicke and Estelle.

Founded in 1996 by Denise Rich as the G&P Foundation, Gabrielle’s Angel Foundation funds medical research for the prevention and treatment of leukemia, lymphoma and related cancers.

Click through the photo gallery to see the stars shine for a good cause.