I hate my boobs

I've been insecure about my boobs or tits w/e for the longest like its one of the biggest parts I dislike about my body . Like their so saggy for me to be 17; I feel like all the girls in my age group have such nicer boobs than me . And now that this #freethenipple movement is rising (i support it in every way) I'm just so scared to wear shirts without a bra because I know I'm gonna get made fun of or just someone say "eww" like I KNOW It actually has happened before and my sister even said some rude comments on them before . And it's so uncomfortable having to wear a bra all the time when my fiends just walk around all free and open . My ex had asked me to send him nudes and I wanted to like so bad because I'm a sucker fo teasing 😏 but I kept stalling and changing the subject because I know he's gonna be disgusted or just let down. And I even stray away from certain dresses or shirts because I know my boobs won't look pleasing