Unfortunately for my wallet, Katie is a fan of the American Girl doll series by Mattel.

FORBES: Business Lessons From A Nine-Year Old

"When I was a little girl my favorite doll was named Petra and I carried her around with me everywhere, " the designer explains as Vujevic struts down the narrow path in between racks of clothing and accessories littering the floor.

CNN: A day in the life of a New York Fashion Week model

Other people are praying you'll deliver Microsoft 's Xbox 360, Apple Computer 's iPod nano, or a doll and outfit from the American Girl store.

FORBES: Magazine Article

The girl looked like a rag doll, with her striped stockings and limp bangs.

NEWYORKER: The Repatriates

I'm the little girl, playing with her doll, who can't understand when someone screams hateful things at her because of where her family is from.

BBC: What's your favourite poem?

They cite one case study in which a 10-year-old girl, who had been given a robot doll for several weeks, reported that "now that she's played with me a lot more, she really knows me".

BBC: When are we going to learn to trust robots?