My daughter had something like this.
A little over 20 years ago, she came home from a slumber-party with her Barbie dressed in Ken's jeans and T-shirt. Other accessories included paddock boots and a riding helmet.
Her mother asked her why the clothes change ... She replied "She's a programmer." I kinda laughed, and asked her about the boots & hard-hat. She gave me a look like I was a complete idiot and said "Daddy, her horses aren't going to ride themselves!" She wasn't quite five years old.
Today, my daughter is a programmer, has six horses, and is competitive in the hunter/jumper world, and dressage ... and that old Barbie is sitting on top of one of my bookcases here in the office. After my wedding ring, it's probably my most prized piece of hardware :-)