My way of thinking about it is that if you sell it as more just a cosmetic thing rather than a drastic measure to alleviate yourself of an insecurity that makes you feel inferior, people won’t think as much about it. Cosmetic surgery, except when obsessively overdone, isn’t really seen as something shameful. Maybe a bit vain, but it’s been around since before Jesus even walked the earth.
I’m not sure about your proportions, but I have a long upper body (average size for someone about 8-10cm taller) and very short legs. I’m about 167 cm and my girlfriend is 150 cm (and has good proportions for her size), and our legs are almost the same length with mine being only slightly longer.
I plan on just telling people it was a cosmetic thing for me to have better proportions. If people ask about the added height, I will say it was just an added bonus. If you are cool and confident about it and treat it as nothing more than getting a little cosmetic work done, people will not really care just like they don’t really care about when people get nose jobs.
If asked also, I also plan on downplaying the amount of pain. “It hurt but it was manageable”