United Kingdom, May 14 -- Salma Hayek had a "very bad case of imposter syndrome" before posing for the Sports Illustrated Swimsuit Issue.

The 58-year-old actress is the cover star of this year's Sports Illustrated Swimsuit edition - but Salma has admitted to suffering lots of self-doubts before her photoshoot.

The Hollywood star said on the 'Today' show: "I said yes and then when it was time to do it, I tried to back out. I said, 'No,' because the bathing suits never fit me, how am I gonna do this? There's nothing my size - I always suffer.'"

Salma confessed to feeling out of her comfort zone prior to the shoot.

The actress is still in a state of shock even now, suggesting that she doesn't have a model-like body.

The brunette beauty ...