Worn this as teen cyclist?

[PamNY]

Her outfit looks pretty normal to me. Bike commuters wear all kinds of things.

I wouldn't make too many assumptions based on age.

[colorisnt]

Sadly, I would be more concerned about her getting made fun of because of the helmet than the pants. I always got ridiculed for mine - both on the bike and the horse. Mom and Dad never budged and after many falls off my bike and being run over by numerous horses, even kicked in the head after being rolled on, I am still alive!