Olsen "comfortable" kissing Kingsley

'The Wackness'

Mary-Kate Olsen has revealed that she felt "comfortable" kissing Sir Ben Kingsley on screen.

The 22-year-old, who appears with the acclaimed British actor in The Wackness, said their 42-year age gap did not present any problems.

She told the Wall Street Journal: "We shot [the scene] at 3 o'clock in the morning and so everyone was a bit delirious.

"He was so professional about it and made me feel so comfortable. He said: 'Anything you don't feel comfortable about, let me know. You lead me.'"

The Wackness, a coming-of-age story set in mid-'90s New York, is released in the UK on August 29.