Jennifer Lopez's Monkey Business

Jennifer Lopez (in Albino) goes bananas and slips into her 1940′s glam chic get-up during a quick 15-minute appearance at the launch party of the Lorraine Schwartz Diamond Monkey Collection on Wednesday.

Jennifer, 37, joined Pharrell Williams, Debra Messing, Heidi Klum, and Cassie at the newly swank Monkey Bar in New York City.

15+ pictures inside of Jennifer getting her monkey biz on…