Janet Jackson & Jessie J - amfAR Cannes Gala 2012

Janet Jackson and fellow singer Jessie J hit the 2012 amfAR Cinema Against AIDS Gala on Thursday (May 24) at Hotel du Cap-Eden-Roc in Antibes, France.

The 46-year-old entertainer wore a custom Emilio Pucci white silk cady halter gown, while Jessie, 24, showed some leg in a leopard-print gown with a thigh-high slit.

“Red Carpet trrrraannnssformation time :),” Jessie tweeted before hitting the 2012 Cannes Film Festival event. “Red Carpet done :) now to sing to the most beautiful group of people I’ve ever seen. Woah! Let’s raise some money for charity #amfar #cannes.”

10+ pictures inside of Janet Jackson and Jessie J at the amfAR Cinema Against AIDS Gala…