Gaining

You get stretch marks when you undergo rapid growth. There is no particular weight you need to reach.

I've got some when I went through childhood growth spurts and when I rapidly put on muscle. I noticed mine because I felt the itch in those areas first. Then, over time, I saw the stretch marks.

Meanwhile, my feedee didn't have very many stretch marks when we met. And he was already fat at the time. He's much fatter now that I'm keeping him well fed and stuffed. He practically gets his overnight.

I have some on my inner thighs but nowhere else so far. They come in slowly and itch while they're coming in, and the texture stays different from surrounding skin even once they stop itching.

I got mine when I was hitting puberty, growing 6 inches taller and about 8 inches rounder in about a year. I even got them on my shoulders.

It's tough to say. It depends on how quickly you're gaining weight, where your body tends to store fat, and how prone your body is to developing stretch marks.

I have a lot of stretch marks on my hips, thighs, and butt, but those were from puberty. The more recent stretch marks are from intentional gaining, and those mainly developed on my belly. I noticed that my skin was stretch very tight just prior to getting the stretch marks on my belly, and they seemed to appear over a matter of days. It did not hurt, but I do remember the stretch marks were a little itchy at first.

I don't like the stretch marks. Someone on here recommended supplementing with vitamin A and vitamin C to reduce the chances of developing stretch marks in the first place.