What should my boyfriend do to be Emmett?

This week is spirit week at my school and on Friday, it's superhero/villian/sidekick/monster day and so my boyfriend and I are dressing up as Emmett Cullen and Rosalie Hale from Twilight. And so I need to tell him what he needs to wear, but I don't really know. So if you have suggestions, that would be great. Thank you :)