Too young to be a supermodel? Meet nine-year-old Kristina Pimenova, the controversial child fashion star dubbed 'the most beautiful girl in the world'

Kristina Pimenova may only be nine years old, but she's been a hugely successful model since the age of three, and is widely touted 'the most beautiful girl in the world.'

Kristina, from Moscow, Russia, has been walking catwalks since the age of four, graced the prestigious cover of Vogue Bambini when she was seven, and has already been the face of Roberto Cavalli, Dolce & Gabbana, Armani and Benetton, among others.
She also has a legion of fans - more than two million Facebook followers - but also a large handful of concerned critics who insist she's being sexualized. Indeed, recent comments on her Instagram photos include users declaring her a 'babe' and praising her 'long legs.'

The little cutie when she was a toddler