Los Angeles, Aug 12 Socialite Pippa Middleton is reportedly upset with fashion designer Karl Lagerfeld's comment on her looks.

Lagerfeld caused controversy recently by saying that Middleton should hide her face as she is not beautiful.

However, the 28-year-old has remained silent on the comment, but is hurt by it.

"Pippa's devastated by Karl's cruel comments. She has always been confident about her looks. But she doesn't want to retaliate and start a war of words. Her friends have tried to make her laugh about it as Karl is hardly a supermodel himself," Closer magazine quoted a source as saying.

The designer had praised Pippa's elder sister Kate Middleton calling her a romantic beauty.