Exclusive | Meet the adults spending an ungodly amount to look like their prized American Girl dolls

How old is too old to play with dolls?According to 45-year-old Diane McMillin, the limit does not exist. The Massachusetts mom of five told The Post that she has over 80 American Girl dolls in her collection — and she has spent over $10,000 on the toys and accessories.McMillin said the American Girl dolls’ plucky spirits even inspired her to start a small business — creating bespoke doll clothes on Etsy — after parent company Mattel wouldn’t re-release the toys’ original dresses and shoes that first captivated young fans in the 1980s and 1990s.“We’re adults now and we have adult money,” said McMillin.“We want to spend a ton on these things.

So if they won’t make them, I can.” Demand, she said, is white hot.“We sell out of everything,” said McMillin, who also runs the Instagram fan account, Sonnet x Gabriella, devoted to American Girl.“Other women are just as in love with American Girl as I am, and they’re willing to invest in their dolls.”McMillin admits her American Girl “obsession” can seem like a lot, but she said she’s never been judged by friends — or even her husband — for dressing up like her dolls in what she jokes is “American Girl Cosplay.”“My teenagers hate it, though,” she admitted, laughing.

“I have four boys and they ask me to put all the dolls away when their friends start coming over.”McMillin now has a six-year-old daughter with whom she shares her beloved Samantha doll, and the rest of her plastic brood.“It’s like, finally! My dream!” she exclaimed.But McMillin’s latest American Girl acquisition isn’t a tiny taffeta dress or an itty bitty pair of antique ice skates.

It’s a $30 hardcover novel by best-selling author Fiona Davis called “Samantha: The Next Chapter“.The brand new book, the first ever American Girl adult novel, follows the very grown-up adventure of Samantha Parkington, who is considered the best-selling American Girl toy of all time.Based on the charming brune...