And supermodel Kate Moss angered anti-fur campaigners when she was spotted arriving for the Yves Saint Laurent fashion party on Thursday wearing a fox wrap.
The £2,000 outfit upset friends of hers like Stella McCartney and George Michael.
According to the campaign group Respect for Animals, more than 30 million animals are killed each year to provide fur for clothes.
In recent years, many celebs have campaigned to get fake fur used instead of real fur. They say it looks and feels just as good.
But the fashion industry has started using real fur more and more.
A spokesperson for PETA (People for the Ethical Treatment of Animals) told CBBC Newsround Online: "Fur is worn by highly visible models, but for the general public, it's as popular as a cold sore."
He added, "Anyone still designing with it really is a dinosaur in the fashion world."