Natalie Lovett and her daughter Lexie. Picture: ABC

Natalie Lovett was 46 and unable to become pregnant when she visited a San Diego fertility clinic to purchase anonymous donor eggs and donor sperm to create her now-18-month-old daughter, Lexie.

Ms Lovett will tell Australian Story, tonight on ABC TV, about her struggle to become a mother and her plans to give away her spare embryos to help childless couples.

The Facebook executive says she was surprised when the fertility treatment where she’d had the embryo transfer asked her what she wanted to do with her remaining embryos.

“I have one perfect daughter and then I’m told I have another 25 embryos that I can either destroy, donate to science or give away,” she says.

Natalie Lovett and her daughter Lexie. Picture: ABCSource:

“I could never destroy them so I decided to give them to other childless families.”

Under the plan, Lexie could have as many as 10 donor siblings in the future.

But the embryo giveaway comes with a catch.

All recipients must contractually agree to attend a yearly reunion with Lexie’s siblings and stay in touch through a private Facebook page.

“Having the knowledge that she is not the only one, that she is not this rare and unique individual, that she is from a family in essence, these siblings are out there, to know them, to interact with them (is good),” Ms Lovett told Australian Story.

Natalie Lovett wants her spare embryos to help create a family of siblings for little Lexie. Picture: ABCSource:

“So the contract stipulates that the siblings and families get together once a year, and I hope they honour that. I mean, it is yet to be tested.”

She also wants embryo recipients with a tertiary education but none with extended family members who have had addictions.

“It’s hard for a lot of people to understand, and it’s definitely not a cult, but she would like Lexie to have an extended family,” Ms Lovett’s sister Amanda Lovett-Jones says.

Ms Lovett has three embryo recipients so far and two are now pregnant.

Ms Lovett used donor sperm and donor eggs to create Lexie. Picture: ABCSource:

Australian Story follows one of the recipients, a South Australian woman as she tries to get pregnant using two of Lovett’s American embryos.

“I think baby lust is very strong and very powerful, and so people desperately want to become parents,” Kate Bourne from the Victorian Assisted Reproductive Treatment Authority says in tonight’s episode.

“Some people will go to great lengths to travel anywhere to meet that need.”

Australian Story: Lexie’s Village airs at 8pm on ABC TV.