F (32) 5'1 145lbs - i lose weight in cycles for a hobby I participate in and it has depleted my breasts so many times, just so self conscious with how they look now..
It took me until my 50s to stop being self-conscious about my slender body and skinny arms. Exercising more helped a bit but it was mostly in my head. My advice - love yourself now! (The sign was for a Twitter pro-nudity campaign)