Wanting a boob job. Will I look badly?

Alright, I am petite. I am 113-116lbs normally. I have cup size a boobs. I am super self conscious about it, I’m tired of not feeling like a woman (I’m 22), I’m tired of looking like a boy, and comparing myself to other women. I’m tired of being jealous of my 10 year old sister that already has bigger boobs than I do. I have wanted this for awhile. Anyway, I’m afraid I will look disproportionate and look fake. I want a small/full cup size c. - plot twist, my mom is really supportive. She tells me stories of friends she knows that have had the surgery and not regretted it and tells me I should go full C. My boyfriend isn’t so supportive. He tells me I’ll be ruining my body. (But he never compliments me or touches my boobs ever)

Will I look badly? I always have had a little stomach because whenever I eat or drink a lot it shows because I’m tiny. I know my butt is small but I’m working on getting it a bit bigger before I go for surgery. Anyway, will I look badly?! There are two pictures with a padded bra and two pictures without. I don’t think your stomach should be bigger than your boobs. Especially since I’m tiny already.

In a bra:

:(Braless: