As/Is·Posted on Mar 28, 2016Let's Answer The Bra Sleep QuestionLet's get to the bottom of this.by Grace SpelmanBuzzFeed StaffFacebookPinterestTwitterMailLink When you were younger, you probably heard someone say: "You're not supposed to sleep in your bra! It's bad for you." Or maybe you were warned: "If you don't sleep in a bra every night, your boobs will sag." We heard these mixed messages from our friends, our moms, our friends' moms, our sisters, our grandmas. But where did they hear it from? Tap to play GIF Tap to play GIF