Though I am speaking from second-hand knowledge here, Judi has it right. Most importantly, at your age it's quite unlikely that you are going to lose a lot of tone/shaping at your bustline even if you do lose weight. And yes, as you continue through late adolescence it's quite likely that your bustline will change irrespective of weight changes generally.
Losing 18 pounds quickly is tough to sustain. It's a great start to any diet!!! but you'll need to keep up with the exercise and watch what you eat to avoid putting it back on. So use this as a point of departure to develop those good habits (and immediately losing a dress size or two should be a terrific motivator).
Back to your questions about your breasts. This is one case where exercise will really help. Specifically, anything to strengthen your pectoral muscles (bench press, push-ups, all the exercises that women especially hate). There is a lot of muscle behind the area where the breast connects to the chest cavity, and keeping that muscle tight and toned will help keep your breasts pulled up.
Lingerie choices matter. If you have lost all that weight and intend to keep it off, I'd suggest you get re-fitted for a bra as you have probably changed sizes somewhere. It's difficult to overstate how important this is for comfort, health of your lower back and shoulders, and so on.
Supplements and massage won't make a shred of difference. Do it if you enjoy them only...
Good luck!
|