Sebastian Stan is taking the promotion of his new film “Monday” to the next level.

In his latest Instagram post, the actor, 38, posed naked, showing off his buttocks, while teasing that the rom-com will hit big screens this week.

Standing in only a pair of sneakers, socks and a jacket, Stan’s butt peaked out, sending Twitter overboard.

“‘MONDAY’, the movie. Out this Thursday,” he captioned his post. “When I say we gave it our ‘all’, we literally did.”

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“Monday” follows Mickey (Stan) and Chloe (Denise Gough), two Americans living in Athens, Greece. After meeting on a weekend in the heat of summer, the pair explore their relationship as the inevitable Monday creeps up ahead of them.

Check out some of the reaction below:

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“Monday” is set for release on April 12.