The Modern Family actress, 48, shared the throwback snapshot in which she looked sun-kissed and wore a large flower in her hair.
Sofia simply captioned the image: "#tbt Colombia the 90's," before being bombarded with comments over the post.
WATCH: Sofia Vergara is a bombshell in sizzling throwback bikini photos
German supermodel, Heidi Klum, was almost lost for words and wrote: "WOW," followed by a shocked face and on-fire emojis.
Sofia's other fans marvelled at her physique and wrote: "Simply beautiful," and, "holy cow," while many commented on her heavy nineties makeup.
Just recently, Sofia sported a more toned-down look when she shared a photo of herself makeup-free and relaxing at her home.
Sofia was a knockout in her modelling snapshot
She was chilling with a cup of coffee and her pet pooch and proved she can look effortlessly chic, even in her pyjamas.
Sofia is quite the chameleon as other throwback images of herself show her with an array of different looks.
Her followers frequently marvel at how Sofia doesn't seem to age.
Sofia's fans insist she doesn't seem to age
The mum-of-one credits drinking plenty of water and a healthy balanced diet for her youthful good looks.
Her diet includes vegetables, blueberries, green tea, and chamomile tea and she adds collagen powder to the mix.
And when it comes to her beauty regime, she's all about keeping it simple.
"I used to do masks and scrubs and rubs and things-I mean, I'm crazy about products-but I've had to simplify as I've gotten older," she told Health. "I have rosacea-it's redness and sensitivity. If you put on too much stuff, there is irritation, so I have to keep it very simple."
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