Once Upon a Time has found its Elsa.
Actress Georgina Haig, of Fringe fame, will join the fourth season of ABC's fantasy drama, playing the character from the 2013 animated hit Frozen. Executive producer Adam Horowitz confirmed the news on Twitter Thursday morning.
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Haig joins previously announced new cast members Scott Michael Foster (Greek) and Elizabeth Lail, who will play Kristoff and Elsa's younger sister, Anna.
Australian actress Haig recurred on Season 5 of Fringe, playing Peter (Joshua Jackson) and Olivia's (Anna Torv) grownup daughter, Etta. She currently stars on CBS's Reckless.
Please welcome our Elsa -- @GeorginaHaig ! Thrilled to have you join the #OnceUponATime family! #Frozen— Adam Horowitz (@AdamHorowitzLA) July 3, 2014
Once Upon a Time teased the introduction of the Queen of Arendelle back in its Season 3 finale, when the final frames of the episode saw Elsa travel through a time portal to Storybrooke, in one of the most shocking season ending surprises of the year.
[img src="http://admin.mashable.com/wp-content/uploads/2014/07/FrozenSPLIT-ELSA.jpg" caption="Actress Georgina Haig, left, has been cast as "Frozen"'s Elsa on "Once Upon a Time." " credit="Mashable composite: Peter Bregg/Getty Images; Disney" alt="Frozen Split Elsa"]