Audrina Patridge Strips as PETA angle

Audrina Patridge an angel? Hills fans might think it's a bit of a stretch, but the reality TV star is donning her wings – and a sexy white bikini! – in a new campaign for PETA, revealed first on PEOPLE.

On a billboard set to be unveiled Wednesday on L.A.'s Beverly Boulevard, Patridge poses in the sexy angel outfit with her rescued dog, Speedy Gonzalez, next to the line, "Be an Angel for Animals-Always Adopt, Never Buy."