Can you guess the age of this fitness blogger and mom of two?

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.

Her followers were shocked when she recently revealed that she celebrated her 50^th 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.

“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.

“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