I'm hoping it's Sherry, Jake, or CHRIIIIIS!
Thoughts? I'm sure it will probably be a monster or something though like (highlight for possible spoiler, but just a theory) : Carla
http://www.gamepur.com/news/8529-esrb-confirms-nudity-resident-evil-6.html

http://www.gamepur.com/news/8529-esrb-confirms-nudity-resident-evil-6.html