Heidi Klum Loses Her Pants For Stand Up 2 Cancer PSA [PHOTOS]

Stand Up 2 Cancer and it’s Celebrity Ambassador Heidi Klum unveiled a new public service announcement that will appear first in People magazine’s World’s Most Beautiful issue which is on on newsstands tomorrow (April 15). Klum poses wearing only a grey SU2C sweatshirt in the PSA, photographed by Rankin which can be purchased here.

“If you don’t want to be OUT, you can be IN by joining me and the Stand Up to Cancer movement in the fight against cancer. Let’s all say Auf Wiedersehen to cancer together!” said Klum.

PHOTOS: Heidi Klum Gets Slimed At The Kids Choice Awards

Last night Heidi attended the 16th Annual Los Angeles Antiques Show in Santa Monica. She wore a brown pantsuit with a racy peak-a-boo front. It looks like Project Runaway fans will have to wait until late this summer for the new season to debut.