The Doors heart-throb Val Kilmer caused the entire crew to blush on the set of his new film MINDHUNTERS.

The feisty star, who split with Daryl Hannah last year, arrived on the set for a costume fitting recently and pulled down his jeans - forgetting that he had nothing on underneath.

Kilmer giggles, ""I forgot my underwear."

"I didn't come from home," he cryptically adds.