From left to right they are:

Mellisandre (Ariel from The Little Mermaid)

Brienne (Mulan)

Ellaria Sand (Jasmine from Aladdin)

Olenna Tyrell (Grandmother Fa from Mulan)

Margaery Tyrell (Belle from Beauty and the Beast)

Shae (Snow White)

Sansa Stark (Rapunzel)

Catelyn Stark (Cinderella)

Cersei Lannister (Sleeping Beauty)

Ygritte (Merida from Brave)

Arya (Lilo from Lilo and Stitch)

Meera [Clothes+Bow] or Missandei [Black+Standing near Dany] (Tiana from The Princess and the Frog)

Daenerys Stormborn Targaryen (Elsa from Frozen + Mushu)

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Disney Jon Snow:

Artist: http://nandomendonssa.deviantart.com/

Comments: http://reddit.com/r/gameofthrones/comments/245uvn/no_spoiler_disney_jon_snow/

Disney Tyrion Lannister:

Artist: http://nandomendonssa.deviantart.com/

Comments: http://reddit.com/r/gameofthrones/comments/245u2p/no_spoiler_disney_tyrion_lannister/