This is how the cast of Game of Thrones looked like before they were famous on the show. Some were already famous back then, but it's obvious how GoT propelled them to superstardom. Check out the gallery below for more:

Young Kristian Nairn to Hodor.

A young Sophie Turner to Sansa Stark.

Natalie Dormer as Victoria in ‘Casanova’ to Margaery Tyrell.

Ross Mullan as a puppeteer in ‘Bear Behaving Badly’ to the White Walker.

Jason Momoa from ‘Baywatch’ to Khal Drogo.

Charles Dance as David Carlton in ‘Ali G’ to Tywin Lannister.

Aiden Gillen as Frank in ‘The Low Down’ to Petyr Baelish.

Alfie Allen as Arundel’s son in ‘Elizabeth’ to Theon Greyjoy.

Rose Leslie as Gwen Dawson in ‘Downton Abbey’ to Ygritte.

A young Gwendoline Christie to Brienne of Tarth.

Carice Van Houten as Suzy in ‘Suzy Q’ to Melisandre.

Tom Wlaschiha in ‘Spoons’ to Jaqwn H’gar.

Kit Harington to Jon Snow.

Diana Rigg as Emma Peel from ‘The Avengers’ to Olena Tyrrel.

Jonathan Pryce as Sam Lowry in ‘Brazil’ to the High Sparrow.

Sean Bean as Horace Clark in ‘The Bill’ to Ned Stark.

Iain Glenn as Carl Galton in ‘The Fear’ to Ser Jorah Mormont.

A young Emilia Clarke to Daenerys Targaryen.

Young Hafþór Júlíus Björnsson as The Mountain.

A young Kristofer Hivju to Tormund Giantsbane.