if it really is harmless and just looks different which i barely even noticed from the pictures, then don't worry about it. when you get to that level of comfort with a girl, she shouldn't be bugged by it especially if she likes you. i wouldn't even bring it up unless the circumstances call for it (i.e she notices and asks) i have these harmless scar tissue that just cosmetically looks bad called keloids and i've always been a bit self-conscious with them naked. i usually warn them that i have these scars..... but what they think of are normal scar tissue that doesnt even look bad. so i give them a warning but then they find out for themselves.. and if they're not cool with it, and dump me.. then their lost. but i've never had that happen. when it ccomes down to it, my partner overlooks it bcos he likes me for me and looks at the big picture.
and she should too.