Tamra Barney is proud of her 46-year-old beach bod -- so proud, she thinks she looks better now than she did over 20 years ago!

The "Real Housewives of Orange County" star slipped into a bikini for Life&Style, telling the mag "Overall, I feel more comfortable in my skin now. I look hotter at 46 than I did at 25!"

And, to prove her point, she even shared a photo of her younger self in a floral two-piece.

Barney, who had her breast implants removed last year, credits a healthy diet and strict workout regime for her impressive physique.

"I used to starve myself," Tamra says. “I was skinny, but I was really flabby. Eating right has changed my body the most. No dairy; no sugar. Nothing white, basically."

Tamra also runs a gym, CUT Fitness, with her husband Eddie Judge.

"I’m at the gym every single day,” she adds. "So if I’m there, I might as well go take a class: Grit, cycling, dance or something else. Sometimes I’ll do three classes in one day."

Well, it shows!

Check out the gallery above to see how some of the other "Housewives" have changed through the years, thanks to some plastic surgery.

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