Tom Cruise has "fallen" for his Mission: Impossible 6 co-star Vanessa Kirby, according to reports.

A source told InTouch Weekly that Cruise was very impressed by Kirby's role in The Crown, and told producers that she should be cast for the sixth installment of Mission: Impossible."Tom flipped for her work," said the source.

"He told the other MI producers that he had to have Vanessa for a crucial role in the franchise's sixth installment."

Once the pair were on set, there was "instant chemistry," according to the source.

"He's blown away by her endless charm and energy."

Cruise was married to Katie Holmes from 2006 until 2012, and the pair have one daughter, Suri (ten), together.