'Once Upon a Time' Season 4 Spoilers: Frozen Character Elsa Spotted on Film Set

Jul 21, 2014 11:46 AM EDT

New photos from the set of 'Once Upon a Time' Season 4 reveal Georgina Haig dressed as Queen Elsa from the film 'Frozen.'

The images that were posted on Splash News show the 28-year-old actor dressed in Elsa's iconic blue dress, and wearing long-braided blonde hair. Haig later voiced her thoughts on Twitter concerning her recent appearance.

"Ahhhh blonde hair- sometimes I think you look quite nice, other times like village of the damned high school reunion," Haig playfully tweeted on Wednesday.

Besides Elsa, two more 'Frozen' characters have been confirmed for regular appearances in the upcoming new season. Unfortunately, Olaf was not included in the Season 4 cast lineup.

Elizabeth Lail will star as Elsa's sister Princess Anna. Scott Michael Foster will take on the role of Kristoff, the young ice-cutter from the animated musical.

Showrunners Vow to Stay True to 'Frozen' Spirit

'Once Upon a Time' writers-producers Edward Kitsis and Adam Horowitz recently revealed that they were staying true to the 'Frozen' universe.

"We would never want to re-do the movie," Horowitz said in an Entertainment Weekly interview on Thursday. "We want it to walk that line of being part of the 'Once Upon a Time' universe, but also feel like part of the 'Frozen' world."

"Adam and I were looking to bring the spirit of Elsa and Anna into our show," Kitsis added. "We're not looking to do a sequel, we're just looking to bring them into our world for a fun story arc."

In previous seasons, the ABC original-series took great liberty with reinventing original fairytales such as Peter Pan and the Wizard of Oz. For instance, Pan was the main villain in Season Three, while Captain Hook is portrayed as a tortured anti-hero who eventually joins the good guys.

Horowitz also confirmed that Season Four will not include music, even though 'Frozen' won critical acclaim for its iconic soundtrack.

"We've never done a musical episode, and I don't think the way we want to tell this story is to suddenly turn 'Once Upon a Time' into a musical," Horowitz explained.

'Once Upon a Time' Season Four will premiere Sunday, Sept. 28 at 8pm EST on ABC.