[ Fashion & Accessories ] Open Question : What do you think should be the cut-off size for people to wear skinny jeans?

My friend insists that people under size 10 can wear skinny jeans and look good but not over, but personally, I saw a size 16 girl wearing some bright ones and she looked awesome. I don't think there should be a society-made cut off size for girls to wear skinny jeans. Do you? And if you do, what size should they be cut off at?