Her mum has been running her Instagram account since she was just four, and fans constantly flood the comments section with adoring words.
Daily Star UK reports that the genetically-gifted girl has already kickstarted her career by posing in big ad campaigns and previous year she was unveiled as the face of Little Miss Aoki - a luxury couture fashion line. Pictures are uploaded regularly of Anastasia on photoshoots and backstage, and the child has amassed a following of over 540,000.
Anastasia, six, has become an online sensation thanks to her mum Anna sharing modelling photos of her daughter, including campaign shots for Russian brand Chobi Kids.
Following in the now-famous footsteps of 16-year-old French model Thylane Blondeau, who was given the very same title back when she was 16. "I think she is the most lovely girl on the earth!" while another posted: "What a attractive eyes".
Worldwide news agencies have gone insane this week talking about an exquisite blue-eyed Russian beauty named Anastasia Knyazeva. Each post racks up hundreds of comments from users complimenting the 6-year-old's lovely eyes and striking features.
"In this day and age we need to protect children", commented one social media user.
Some critics claim Anna is exposing her daughter to a world of online predators.
This brings back memories of the controversy that was triggered when 9-year-old Russian child model, Kristina Pimenova, was hailed as the "most handsome girl in the world" three years ago. Some have criticised Anastasia's parents for putting pictures of their daughter online.