NEW YORK -- A racy Calvin Klein billboard is raising even New Yorkers' jaded eyebrows, with some passers-by saying the clothing maker crossed the line with its sexy advertisement.

The new billboard shows a young woman lying on top of a man, while kissing another man. All three models are topless. Another male model reclines on the floor with his jeans unbuttoned.

"I think it's obscene," said Rachelle Brunn, who was passing by the extremely large billboard...