With just one gaze you’ll understand why this mom often gets mistaken for her teenage son’s girlfriend.

Pupsa Dewi, from Jakarta, Indonesia, has racked up a huge following on Instagram thanks to her radiantly youthful looks – which she proudly accredits to her regular workouts and extremely healthy diet.

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Her followers were shocked when she recently revealed that she celebrated her 50th birthday in September.

In the picture of her birthday celebration, she poses in a glitzy ball gown and tiara with her two teenage sons, Dennis and Daniel.

And it doesn’t come as much of a surprise that her ’gram fans refused to believe that she was old enough to be their mom.

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“I don’t think you’re their mom. I think you’re their sister or their prom date . . . damn you look amazing,” one Instagrammer commented.

According to the Sun, Pupsa, who’s married, says she absolutely loves aerobics, swimming and is a major fan of Zumba. The mom-of-two regularly appears on an Indonesian television show where she gives skincare, fitness and dieting advice.

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“People say that the older I get, the younger I look, which I think is true because I’m happier now, the children are all grown up and I get to run a business I love,” Pupsa told Detik Magazine.

In a society where plastic surgery is the norm, the 50-year-old mom maintains that her incredible youthful appearance is all natural.

“I guess I’m just radiating happiness,” she says.

Sources: thesun.co.uk, nypost.com, odditycentral.com, health.detik.com