Hey, coy. >> reporter: hi, laura. kamila valiyeva, 15-year-old figure skater, allowed to compete despite being tested positive for a banned substance. some incredible stories to highlight. three american women competing headlined by reining u.s. national champ mariah belle. she'll be the oldest skater. she sat down to us as she sets out to prove that age ain't nothing but a number. >> there's a stigma in skating, and probably a lot of things, that you can only do it up to a certain age or it's your time to move on or whatever. if you are dedicated to something and you have a dream, there's no ...