May 12th, 2011
03:17 PM ET
Katie Holmes may be married to an older man in real life, but she's set to play a cougar in the upcoming comedy "Responsible Adults."
According to Deadline, Holmes will star as Liz Quinn, a 30-year-old med student who falls head-over-heels for charming 22-year-old Baxter, to be played by "Gossip Girl" star Chace Crawford.
Just as things begin to heat up between the two, Liz realizes that she has met Baxter before. In fact, she used to be his babysitter just 15 years earlier!
Rather than call off the relationship, Baxter becomes determined to make things work with the woman who knows him better than anyone else.
"Responsible Adults" is set to begin filming in Los Angeles this fall.
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