Where can I buy a pair of skinny black jeans that I see so many young women wearing (the kind that are super skinny and don't become baggy at the knees and don't sag on the bum)? Every time I buy skinny jeans/jeggings, they almost immediately go baggy on the knees/bum and look terrible yet I see multiple young women in these type of trousers and I always wonder where they buy them. Also, they seem to be quite thick and not that thin, flimsy material that jeans are made of these days. So basically ones that are super skinny and keep their shape even after several washes.