Zac Efron's abs are now becoming a bi-annual cinema event if the trailer for 'Mike & Dave Need Wedding Dates' is anything to go by. Reuniting in the film are Pitch Perfect stars Anna Kendrick and Adam Devine as well as Dirty Grandpa stars Efron and Aubrey Plaza, who play two party animal brothers and their equally party hard dates that the brothers need for a family wedding (if the title of the movie didn't give that away already).

All you really need to know is that they're all sesh heads and that they more than likely ruin said wedding before banding together to save it. It's not a new premise but if it ain't broke...

'Mike & Dave Need Wedding Dates' is set for release on August 12th.