I'm on vacation with my wife, and this morning a late teen gave me quite the public show. She'd smiled at me as she walked up to her dad sitting across from me. He was probably 10-15 years my junior. As she hugged him she played with her skirt and exposed a decent bit of ass cheek. Originally I thought it was an accident but she came back and rubber her ass. I so wanted to snap a photo but was nervous (both because of my wife and because we were in public). As she left a second time I swear there was mischievous twinkle in her eye. The third time she came to talk to him I think she was about to expose an entire cheek but her mom showed up. As we left, daughter caught my eye and gave me a smile.

I've never seen a piece of clothing like she was wearing. It was a solid color light weight knit. Very short skirt (like JUST below ass cheek when she shoot). There was a piece attached inside (same fabric) what was like underwear with a narrow strip (maybe 2" wide, covering her ass crack).

That's an image that will forever live in my memory and I maybe have to replay at a late date (no, not asking now!). Any advice ok the name of this article of clothing would be greatly appreciated.