Millie Bobby Brown was keeping it real with her candid confession about wearing bras.. Brown, 21, embraced the free the nipple movement while going braless underneath a new red pajama set from her Florence by Mills brand. She modeled the clothes on Thursday, September 4, and shared her thoughts on the look via Instagram. "This is the first time we've been able to sell our intimates as a set," she explained. "I'm obsessed with this fabric - it feels like butter. It's got this sweater-knit feel," the actress added.