Two year old Chinese girl Pang Ya, who weighs 91.3 lbs (41.5kg, approx 6 1/2 st), strikes a pose with her mother on Monday (March 1) in Yuncheng, Shanxi province of China.

When Pang Ya was born, she weighed a healthy 8.8 lbs (4 kg), but since then she has put on weight at an alarming rate.

When she was just 8-months-old, Pang Ya was 44 lbs and now she weighs 92 lbs at the age of two. This means that the toddler already weighs the same as an average fully grown, adult Chinese woman.

“Doctors can’t figure out the reasons for her obesity, which worries us a lot,” said her parents, though they admitted their daughter eats quite a lot compared to her peers.