Campbell, 44, was said to have clashed with Delevingne at the Castel nightclub in Paris, France after confronting the 22-year-old about rude comments she had allegedly made about mutual friend Rihanna, reported the New York Post.
However, Campbell has taken to Twitter to dismiss the claims.
"Don't know where this story has come from about @Caradelevingne and I fighting! It is completely untrue, ignore the rumours," she tweeted.