Gaining weight and my mom is being weird about it?

So I'm trying to gain a bit of weight so I could have slightly bigger boobs (which is kind of happening..boob-wise but slowly..haha) and my Mom keeps on saying things like "I don't know if these pants will still fit you since you insist on gaining weight" and "you have a huge propensity to be overweight" and "you are trying to get fat aren't you?" I mean I haven't told her I'm trying to get bigger boobs because I don't think I need to. But I am not getting fat and I never have been fat so what's her deal? If anything I just have slightly bigger curves. Like I don't understand why she keeps on saying stuff about it and joking about it. My siblings sometimes do this too. What should I do? It's really starting to irritate me. -_- Oh and I'm 19.
Gaining weight and my mom is being weird about it?
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