A former America's Next Top Model judge, Janice Dickinson has apparently questioned Tyra Banks's sincerity after she was forced to apologise over a contoversial promo for the show.

The promo which features the show's judges praising a contestants's incredibly thin waist has sparked controversy worldwide and apparently Dickinson spoke to Access Hollywood to say that Banks knew what she was doing.

Dickinson, a former supermodel, said: "[Excuse] me, but Tyra is the executive producer of that show. She has her finger on everything. No, I don't believe it."

Dickinson also went on to say that in Banks's role as the TV show's boss, she would have seen the promotional strategy and could have stopped the advert if she didn't agree with it.

She said:"I'm here to say that Tyra Banks has her finger on everything. It's her show. "Everything they shoot is intentional. Don't tell me different. I did it for five seasons."

Check out our pictures of the controversial promo...