Tea the Afghan Hound has been named the world's prettiest dog by adoring fans who love her luscious locks.

The 'supermodel' dog from Sydney became an overnight social media sensation due to her glossy hair.

She is a highly decorated show dog and well-admired in those circles but had never before experienced such social media fame.

Her owner, Luke Kavanagh, posted a picture of her on Facebook and was surprised when it got scores of likes and shares.

In the photograph, she sits gracefully on a bench with her hair on full display, as she stares thoughtfully into the distance.