[hendertik]

There is nothing you can do other than keep your skin hydrated. This will make your skin firm. Various creams with oils. Or just oils, coconut oil for example))

But if you're going to get stretch marks, you'll get them. It's definitely hereditary. Look at your mom - does she have a lot of them?

And just about everyone gets at least one or two (or a bunch!), so don't worry about them!