Photographer Malenna Bravo didn’t start her Barbie collection until she was an adult — but she’s more than made up for lost time, amassing a collection of more than 3,000 versions of the world's most famous fashion doll, plus accessories, spinoffs and more.

And the collection is still growing. Malenna estimates she spends $20,000 a year in new acquisitions.

She shares with Lisa some of her prized finds, including an original Barbie from 1959 in nearly pristine condition; the entire line of Golden Dream Barbies from all around the globe; and a vintage coat made for Barbie from real mink, whose market value is now higher than a full-size mink for a real person.

Our host Lisa brought along certified appraiser Kate Martin to appraise the collection — and to try to tempt Mell into a trade for an extremely rare item not in Mell’s collection: a fully accessorized version of the German doll that inspired Barbie’s creation.