Zac Efron rocks sexy red dress in 'Neighbors 2' teaser: 'Sorry, mom'

Zac Efron can even pull off a curve-hugging dress.

The 28-year-old heartthrob posted to Instagram a teaser for his upcoming movie, Neighbors 2: Sorority Rising, on Tuesday, with the hashtags #sorrymom and #CallYouAfterWork2Explain. The video pans up from Efron's heeled boots to reveal that he's donning a sexy red leather dress. "Sorry mom," he says to camera.

When not in a dress, Efron's co-star, Seth Rogen, told ET that he's often shirtless in the sequel. "Zac does Zac," Rogen joked when asked about the actor's buff bod and workout routines. "It annoys him more than it annoys me."

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Neighbors 2 has a sorority, which is even more debaucherous than the fraternity before it, move in next to Mac (Rogen) and Kelly Radner (Rose Byrne). This leaves the couple no choice but to ask for help from their former enemy and frat guy, Teddy (Efron).

See Zac through the years:

Selena Gomez stars in the film as the sorority queen bee, and Rogen dubbed his co-star as "really cool."

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"She's awesome," Efron agreed. "She's super talented."

Neighbors 2 hits theaters on May 20.