Where can I get skinny jeans or leggings for a tall slim 11 year old? She wants them to not flap about her ankles, and they all do. Have tried the River Island Molly jeans as they were described as super skinny but they were more like 'relaxed fit' as they don't really sit close to her legs, iykwim, and I can fit my whole hand in the gap at the bottom. H&M are better but still too loose. None of the supermarket ranges or Primark fit, as they are so loose around the waist that they fall down (or we tighten the elastic and they look like a drawstring bag).
She is slender and muscular rather than skinny, so I can't understand why it is so hard to find clothes that fit.