Fashion designer-turned-photographer Karl Lagerfeld has been hit with a lawsuit over "defamatory" comments he made about overweight models.

Leaders of an association which fights for the rights of curvy women, called Pretty, Curvy, Sexy and Fine With It, in France, have made an official complaint against Chanel's creative director over his criticism of heavier models.

In the lawsuit, the group's president, Betty Aubriere, accuses Lagerfeld of "defamatory and discriminatory comments".

She tells Agence France-Presse, "We're fed up. Many young girls are insecure and hearing such comments is terrible for them. Today it's him who insults us and tomorrow who will it be?"

The group's leader also calls for a law to be put in place, which prevents discrimination against curvy people.

In the past, Lagerfeld has been criticised for his multiple digs at overweight women, most recently writing in his book, The World According to Karl, "No one wants to see curvy women on the catwalk."

He also adds, "It's the fat women sitting in front of televisions with their pack of crisps who say slim models are hideous."

The fashion guru previously upset women's groups for stating singer Adele was "a little too fat". Lagerfeld was quick to apologise for the remark.