What is the height and age of teen catalogue models (Delias, JC Penney, Old Navy)?

I am 5’3 and 20 years old, and I look young for my age. I am not sure if teen models really have to be in their teens. If I send a portfolio to an agency, should I request to be a commercial print model (they accept any height, shape, and size) instead?
Yeah, I am too short for runway and such, but what about commercial print modeling? I read they take take any height, shape and size.