Once Upon a Time” has found its Elsa in “Fringe” alum Georgina Haig, Variety has confirmed.

Haig will play “Frozen’s” ice queen in season four of the ABC fantasy, joining previously announced Elizabeth Lail as Elsa’s sister Anna and “Greek” veteran Scott Michael Foster as her love interest, Kristoff.

The “Frozen” characters will reportedly join the “Once” storyline following the events of the hit Disney movie, after Elsa has frozen her kingdom with an eternal winter and discovered that love is the best way to control her powers.

Haig currently appears on CBS’ “Reckless,” which has finished filming its 13-episode order, and is best known for playing Peter and Olivia’s daughter, Etta, on Fox’s cult sci-fi series “Fringe.”

Fans got their first glimpse of “Frozen’s” Elsa on “Once Upon a Time” in the season three finale, which introduced the powerful ruler of Arendelle in the episode’s closing moments, in which she was shown only from behind.

Haig is represented by Paradigm.