SYLVESTER STALLONE has hit back at ex-fiancee JANICE DICKINSON’s claims he took steroids - calling her a liar.

Former supermodel Dickinson recently revealed on a TV show that the action star took the drugs to boost his body, and even claimed he once injected her in the arm when she was asleep.

She said, "He juiced me. I’d wake up and my arm was as big as Popeye steroids, testosterone, all that stuff." Stallone was engaged to Dickinson in the early 1990s, but he ditched her when a DNA test proved he wasn’t the father of her daughter Savannah.

And a representative for the actor insists the drug story is another fabrication, telling the New York Post, "Janice Dickinson lied about the origin of her child, and she’s lying about this."