She's the former glamour model who underwent breast reduction surgery on Friday.

And now, Nicola Robinson has opened up about her childhood, claiming she was a tomboy, in a lengthy post uploaded to Instagram, the Daily Mail reports.

Sharing a throwback photo of her younger self, the 40-year-old revealed that she always "felt like more of a boy than a girl" growing up, even begging her mum to let her have short hair.

The wife of celebrity chef Pete Evans explained that she believed she was meant to be a boy because she "was so innately into bewwwwbs, especially big ones! (sic)".

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But she said that she never spoke about it for fear that others would think she was "a weirdo".

"I already felt like I didn't quite fit in, so confessing my feelings seemed like a totally unsafe option!" she wrote in her caption.

Nicola continued the eye-opening post by saying that as a child she was "completely and utterly fascinated by the female form".

The blonde beauty said she had been "not at all interested in boys," instead claiming the only men who caught her attention were those that were "fluffy and had four legs."

And with three older brothers who she looked up to, the personality said she tried very hard to emulate their "boyish behaviour".

That meant embracing a love of "skateboarding, nudie girl mags, motorbikes and V8's," which stand in stark contrast to her animal-loving social media posts today.

Fans embraced the Paleo advocate's honesty in the comments section of the post, praising her for opening up a discussion on the topic.

"It's lovely to see someone so courageously facing such big inner fears... Well done on sharing this publicly for your own inner growth and to support that of others," one user wrote.

Another added: "So much love for your open heart space... So so much beauty in truth".

Sharing a throwback photo of her younger self, the 40-year-old revealed that she always
Sharing a throwback photo of her younger self, the 40-year-old revealed that she always "felt like more of a boy than a girl" growing up. Photo / Instagram

It comes just days after the New-Zealand born star underwent breast reduction surgery, taking to social media again to share the news.

"I'm so positively thankful and blessed to be carrying a much lighter load of unnecessary baggage," she wrote.

Nicola announced the procedure days earlier with another post of her pets, this time her precious pup who had received a hair-cut.

"My human gets her fake bewbies explanted 'en bloc' style tomorrow & she really wanted to shave her head in celebration, but she shaved my Earth Suit instead", she captioned the photo.