How to tell my best friend not to wear cropped tops, bikinis, or tank tops?

MMy best friend is 19 has two nasty and bad keloid scars on her stomach. She's never had her belly pierced but it legitimately looks like she has her navel pierced. She had ingrown hairs on her stomach(she has a hairy stomach) and it became two small keloid scars over time. She also has two on her shoulders because of acne. I love her but they are extremely gross. If I'm grossed out about it I know other people would be grossed out about it too. It's not like it's a battle scar from surgery or anything, it was from ingrown hair. Anyways, how can I tell her that she shouldn't wear tank tops, bikinis, and cropped tops? I don't want anyone to feel disgusted about her scars and I don't want her to be disgusted either when she actually looks at herself. She hates the scars because she's had them for almost 2 years now and she's getting insurance to go to the dermatologist. I KNOW people will be grossed out. She's 133 pounds so she's not big, it's just the nasty scars.

*I'm not a troll. She's very self conscious but wants to feel pretty and like a 19 year old because everyone wears those types of clothed especially because it's hot. I'm just concerned for her emotions and would rather she stay covered up then be humiliated. I KNOW a lot of people will stare at it. See? I'm not trolling. Now, I just deleted the picture of it.