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.

New York-based Calvin Klein has long been known for provocative advertising. Brooke Shields famously advertised second-skin Calvin Klein jeans in 1981 when she was a teenager, while model Kate Moss has also appeared in sexy ads.

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

'They always have ads that are pushing the envelope, but this one is the worst I've seen since I've been here. My biggest concern is that it gives teens the wrong idea.'

But Carmen Guzman wasn't bothered by the ad. She said Americans see this kind of advertising everywhere.

Calvin Klein sells clothing and accessories, among other merchandise.

A representative for Calvin Klein declined to comment on the billboard. -- AP