Surgery to remove stretch marks?

Unfortunately, there's not a lot that can be done to treat stretch marks. If the marks are new, you might be able to use lasers to make them appear less prominent. Otherwise, your only option at this point is a buttock lift, where some of the affected skin is stretched and excised. Of course, that procedure in itself will leave a scar, so you'll have to consider whether or not replacing stretch marks with a scar is worth it.