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OTRC: Megan Fox takes a dip with 'This is Forty' co-stars - See photo

Megan Fox, Chris O'Dowd and Jason Segel appears in a photo posted on her official Facebook page on August 20, 2011. (Facebook.com/MeganFox)

Actress Megan Fox gave fans a sneak peek behind the scenes on the set of her latest film "This is Forty."

In a photo posted on her Facebook page on Saturday, Fox is seen with co-stars Chris O'Dowd, 31, and Jason Segel, 31, taking a dip in a pool. The photo can be seen above.

"On set of 'THIS IS 40' with Jason and Chris...Two very handsome, very tall, VERY funny men," she wrote on her Facebook wall.

"This is Forty," is the upcoming film by Judd Apatow. It is a spin-off of the 2007 movie "Knocked Up." In the new movie, Paul Rudd and Leslie Mann, who is also the Appatow's wife, will reprise their characters as a long time married couple facing relationship woes.

Fox's role in the movie, which is currently filming, is being kept under wraps. However, Rudd told E! News on August 18, "Megan is hilarious. I don't know if people don't realize that, but she is really, really funny."

"I'm going to direct a movie this summer, which is a spin-off from 'Knocked Up,'" Apatow told OnTheRedCarpet.com at the 2011 Silver Circle Gala on February 28. "It's about the characters that Paul Rudd and Leslie Mann played and all of the issues of their marriage five years later."

It will be a family affair on set, according to Apatow, who revealed that his two daughters, Maude and Iris, will reprise their roles from "Knocked Up" as Mann and Rudd's daughters.

"This is how I pay for their college education," the writer/director joked. "I put them in movies and pay them SAG scale."

The film also stars John Lithgow, Albert Brooks, "Knocked Up" actors Jason Segel and Charlyne Yi and Melissa McCarthy, who starred in the Apatow produced film "Bridesmaids" and Ava Sambora, daughter of actress Heather Locklear and Bon Jovi guitarist Richie Sambora.

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