answered question 7/5/2010 8-11 Year Olds Wear BRAS? Should They Wear Bras In Such A Young Age? Uhm yeauh? I'm 12 and I wear a 32b, and I started wearing a bra at 10, and I'm not chubby, I'm really skinny. You should only wear one if you need one, even if your 8, But I gueess it's really up to your parent's.