Once Upon a Time is cooling down.Now that filming is well underway for Season 4, we're getting peeks at the new Frozen additions to the cast. Elsa, Anna, and Kristoff will first appear in the season opener. We've already got our first glimpse of Elsa (Georgina Haig), and we saw Anna (Elizabeth Lail) and Elsa together in footage shown at San Diego Comic-Con . But now, it's time to meet Kristoff (Scott Michael Foster) and Sven the reindeer in new photos from Season 4.

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The clip from Comic-Con revealed Anna's getting married, and chances are good that it's to Arendelle's Official Ice Master, Kristoff. In promo photos, Elsa and Kristoff are having a conversation in a barn alongside Sven. Like Elsa and Anna, Kristoff is wearing a costume similar to what he wears in the animated film.

Elsa and Kristoff in Season 4 of Once Upon a Time:

Season 4 of Once Upon a Time premieres on Sunday, September 28th, at 8:00pm ET/PT on ABC.

Amy Ratcliffe is a writer for IGN TV. You can follow her on on Twitter at @Amy_Geek and IGN at alratcliffe