One plays a vampire on the big screen.
The other is considered a super singer.
But Kellan Lutz and Adam Lambert switched roles for Halloween this weekend, as the Twilight Saga star donned a heroic cape and mask; while Lambert vamped himself out for the holiday.
Whose outfit do you prefer? (Don't let Lambert's recent break-up sway your vote below; he wouldn't want your sympathy.)
Who wears his Halloween costume better?