Zac Efron Looking Tipsy, Has Stained Pants While Celebrating His Birthday [PHOTOS]

Zac Efron is seen leaving The Box nightclub in Soho last night (October 20). Zac appeared to be slightly wobbly on his feet, and had drink stains on his suit trousers and tie! What was Zac up to?

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The actor was sporting some peach fuzz on his upper lip, was wearing a grey suit and looked as if he was feeling no pain whatsoever. He spent the night at the notorious London nightspot The Box to help celebrate his 24th birthday.

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Zac has signed on for an upcoming not-yet-titled comedy opposite Seth Rogen. Seth commented on his upcoming co-star, “He seemed like he was a really cool guy, that he’d be fun to work with and seemed that he was capable of much more than the Disney stuff we’ve seen him in.”