Many celebrities have been channeling their idols or people they are also fans of. Couple costumes can always be fun and is a typical go-to. If you have a significant other of course. Jessica Biel and Justin Timberlake hopped on the couple costume train and it did not disappoint, they nailed it. Jessica dressed as Justin from his *Nsync days. It may have been a little more awkward if she dressed as Britney and Him and rocked all that denim.