While there are plenty of stars who get in the Halloween spirit every year [1], there's always a handful of celebrities who either halfheartedly don costumes to themed bashes or eschew disguises altogether. This year was no different, with stars like Tobey Maguire [2], Adam Sandler [3], and Jeremy Piven choosing to not don real costumes when they attended various All Hallows' Eve bashes — and no, wearing just a mask or a hat does not count as a costume.

Tobey Maguire

Mel Gibson

Jim Carrey

Adam Sandler (No, a Hat Doesn't Count)

Stephen Dorff (Same Goes For Headdresses)

Jeremy Piven