Reporter Gloria Hillard gets a glimpse at the underworld of Barbie aficionados, collectors and fanatics at the recent National Barbie Convention in Los Angeles.

The perky and poised plastic doll -- who has had dozens of careers, but just one boyfriend named Ken -- turned 47 this year.

Ironically, that's about the same age as the average Barbie collector. Trading in rare dolls and vintage doll clothes has become serious business.

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