Ken’s a Barbie girl.

“Celebrity Big Brother” star and so-called “human Ken Doll” Rodrigo Alves has come out as transgender, the 36-year-old revealed to the Mirror on Sunday.

“I’m known as Ken but inside I’ve always felt like Barbie,” Alves, who will now go by Roddy and use “she” and “her” pronouns, tells the Mirror while wearing a dress and heels. “I finally feel like the real me. Glamorous, beautiful and feminine.”

Alves has reportedly spent more than $650,000 to achieve her Ken Doll-like look — including having four ribs removed, a “cat-eye” lift and so many nose surgeries that it began sinking and disintegrating — and has now spent even more to achieve a D-cup bust and bigger hips and lips.

She has also deleted all previous posts from her Instagram, which now exclusively features photos of Alves as Barbie, not Ken.

The years of previous plastic surgery were an attempt to live as an enhanced version of her assigned male sex, says the Brazil-born London resident. Now that she identifies with Barbie instead of Ken, she finally feels content.

“For years I tried to live my life as a man. I had a fake six-pack put in, I had fake muscles in my arms, but I was lying to myself,” she says. “I’m a woman and have always had a feminine brain. Now my body matches my mind.”

She’s been enjoying the male attention her new female looks get her, and is excited to finish her transformation with gender reassignment surgery.

“I will have a penile inversion and my testicles will be removed. That will be the final step,” says the former flight attendant. “Before that I’m having silicone breast implants. I’ll be able to wear dresses that show my cleavage and look sexy. I’m very excited.”

Face feminization surgery, involving a forehead reshaping, the removal of Alves’ Adam’s apple and the shaving of her jawline, are also soon to come, she says.

Alves realized she wanted to transition during a photo shoot last year, she says, but she’s long been aware of certain feminine tendencies.

“Growing up, I was very feminine and used to play with dolls and wear my mum’s dresses and heels,” she says, adding that she had breasts as a kid, due to her body producing more estrogen than most males.

After the shoot, though, her transformation into Barbie was rapid.

“Within a month I was diagnosed with gender dysmorphic disorder and given the option to start the ­appropriate medication to transition,” she says. “Before, people looked at me because I looked very androgynous and weird for a man. Now I hope they are looking because they think I am a beautiful woman.”