It’s getting hot in herre, and the Glee kids are taking off all their clothes! Well, the boys are anyway — and it sounds like Rachel (Lea Michele) may, too! FOX has released its promo for Season 4, Episode 12: "Naked," and it’s chock-full of juicy tidbits. We’ve watched the promo again and again, now we’re breaking it down — frame by frame — in search of clues about what’s to come. Take a look at what we discovered!