Buy, buy, baby!

Staten Island plus-size model Marilyn Mansfield has turned her apartment into a creepy silent nursery filled with handmade, eerily lifelike baby dolls she keeps carefully arranged in carriages and cribs.

Mansfield, 33, who is married with three kids, looks after the dolls as if they were her real-life babes, changing their clothes, washing their hair and taking them to the park to play.

“I take them anywhere you would bring a real baby,” said Mansfield, a buxom, tattooed platinum blonde. “I don’t do it for the shock value. I do it for myself because it makes me happy. I just loved when my kids were babies — and these babies stay babies forever. I buy them clothes. They never grow out of them and they never get dirty.”

Mansfield is one of four obsessive collectors featured on TLC’s new show “My Collection Obsession,” which premieres next Sunday at 10 p.m.

In addition to handmade dolls known as “reborns” — which are weighted to feel like real babies, have human hair and sell for up to $2,000 apiece — Mansfield collects Barbies, “Living Dead” dolls and Goth-like “Krypt Kiddies.” In total, she has more than 300 dolls worth hundreds of thousands of dollars in her small apartment.

“I know they’re not alive, but their facial expressions give them all their own personalities,” she said. “When women hold babies, they release hormones. I think that’s what it is for me — it makes me feel good.”

Mansfield doesn’t leave the house without one of her dolls, whose lifelike appearance often means strangers come over to coo.

“People will come over and ask me, ‘How old is he?’ ” Mansfield said. “I’ll try to ignore them. If they keep on, I’ll say, ‘Look, it’s not a baby.’ ”

One woman at Kmart recently told her, “Your baby looks a little pale. Is he OK?”

“She touched him and screamed when she found out it was a doll,” Mansfield recalled.

Her kids aren’t jealous of the attention Mansfield showers on her inanimate playthings. Her 12-year-old daughter helps her mother change their clothes and wash them, and her 7-year-old son has his own doll collection. Her husband has no interest in the dolls, she said, but he’s grown accustomed to their large “family.”

On the show, Mansfield is followed by a camera crew as she takes “Anna Nicole,” a doll the size of a 5-year-old, to get fitted for shoes and then to the playground.

“She went on the swings,” Mansfield said. “She was a hit.”

akarni@nypost.com

