Barbie vs. realistic doll: Guess which one Demi Lovato likes?

If Barbie looked like an average 19-year-old girl, she’d have shorter legs, a thicker waist and a rear end to make pop star Demi Lovato proud.

When Lovato saw photos this week comparing a more realistic doll, a model created by independent artist and researcher Nickolay Lamm, to the twiggy Barbie sold worldwide by El Segundo toymaker Mattel Inc., she tweeted that it was “amazing.”

And in a separate missive to her more than 15 million Twitter followers – many of them young girls – she wrote: “That new @barbie’s got BACK!!!!!...#bootybootybootyboottrockineverywhere.”

Lamm, 24, said in an interview that he wanted to show “that Barbie is unrealistic.”

“If average can be beautiful, why can’t Mattel make normal-looking dolls instead of ones that look alien,” he said.

In a blog post on MyDeals.com, Lamm explained that he turned to the Centers for Disease Control and Prevention to find average measurements for a 19-year-old woman.

He then used digital modeling and a 3-D printer to create an all-white figurine. For the side-by-side photos with Mattel’s Barbie, Lamm added skin tone, hair and a bikini using Photoshop.

PHOTOS: Major retail controversies

He said he originally planned to make a full physical replica of the doll but is now thinking of launching a Kickstarter project to fund the process. First, though, he said he would have to “rebrand it so Mattel doesn’t sue me for a million dollars.”

Global sales of the doll slipped 3% in 2012.

For now, he has no plans to make an equivalent doll modeled on Barbie’s paramour, Ken.

“It would distract from the message I’m trying to send to young girls,” he said. “Women have such higher standards to live up to.”

Case in point: Valeria Lukyanova, a Ukrainian woman who has altered her features and body to better resemble the iconic doll.

Earlier Friday, Lukyanova wrote on her @BarbieHumana_ Twitter profile: “I hope [to] be forever young :’3”

ALSO:

Stock spotlight: Mattel toys with ways to sell more products

Martha Stewart takes 10% pay cut as company aims for profit

Gary Friedman returns as chairman, co-CEO of Restoration Hardware