Mila Kunis

Rachel McAdams double-takes at Channing Tatum's fake penis.

Rachel McAdams double-takes at Channing Tatum's fake penis.

The ‘Vow’ co-stars were shooting a scene where Rachel’s character – who has lost her memory – sees her husband, played by Channing, naked and the actor decided to play a practical joke on Rachel by having the props department make a huge prosthetic penis for him to wear.

Mila Kunis

Mila Kunis

Mila Kunis

Mila Kunis

Mila Kunis

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Mila Kunis

Rachel McAdams has been dating boyfriend Michael Sheen for nearly eight months now since filming for "Midnight in Paris" wrapped up, but their relationship takes a bit of work, and "a lot of air miles," to maintain.

Welcome to the Smart Set where every morning we bring you the gossip coverage, filtered. Today: Also: Michael Vick says he never even wanter to go to Fashion Week, Rachel McAdams is through finding boyfriends on movie sets while filming is still going on, and Ashton Kutcher takes a Twitter stand.

Rachel McAdams developed her relationship with Michael Sheen over time.

"Trying to establish roots somewhere is a bit of a joke," The Vow actress tells The Sunday Telegraph's Stella

Channing Tatum shocked Rachel McAdams by sporting a fake penis on the set of their latest movie.