Leslie Mann has revealed she persuaded her director husband Judd Apatow to cast Megan Fox in his latest comedy This Is 40.
The Knocked Up star is a big fan of Megan's and said people don't realise she can be funny, because she's so good looking.
Leslie said: "I had seen her on SNL and I thought she was hilarious.
"I told a dad at school about her. I was talking about how funny she was and he said, 'Oh, she's a dime a dozen.' Don't repeat this back to me because it won't come out the right way. But as I said, 'What do you mean she's a dime a dozen? She's hilarious! She's really funny!' And he's like, 'Eh. whatever, she's a dime a dozen.' And I said, 'You know what, you are a dime a dozen.' And he's like, 'Oh huh, whatever.'
"And I thought, you know, that's so unfair, just because she's gorgeous people don't give her credit for being f***ing hilarious and how hard that must be to do SNL and then like pull it off and be great. I mean, people just can't do that, and so I got really excited for her coming into read for this movie because I'm a big fan.
"So we were pleasantly surprised again at how great she is. And then, she fit in perfectly."
Leslie and family friend Paul Rudd play husband and wife in the comedy, and Leslie and Judd's two daughters Iris and Maude play Leslie and Paul's screen kids.
She said of her daughters' acting: "I think they have been around it so much that they have picked up on how to do it I think. I encourage them to commit to what it is that they are doing, so to just go all the way with it, to not half ass it, and to just commit."
::This Is 40 is available on Blu-ray and DVD now.