Boobs are fat, so you want to lose fat so, unfortunately that is one of the first places to go, and you have no control of that. I had a friend in the 80’s (I know that’s aging me) that was competing in a bodybuilding contest. When she started out she weighted about 150 more or less and 5″ tall, she was a DD and she got down to 115 lbs. Which was great but she lost only 1 inch off her chest. She looked great but, the guys would only looked at her chest when they talked to her, unfortunately she gained all of the weight back because of that. So just saying Most people will lose their boobs and there are those individuals that won’t .