ABC has released another photo from the upcoming fourth season of Once Upon a Time, which features a fresh look at Georgina Haig as Frozen's Queen Elsa and Elizabeth Lail as Anna. The series has also added Scott Michael Foster as Kristoff, Tyler Jacob Moore as Hans and John Rhys-Davies will voice the rock troll King, Pabbie. The fourth season is set to premiere Sunday, September 28th. Fans will get an advenaced look at the upcoming Frozen characters in action during ABC's The Story of Frozen: Making a Disney Animated Classic, a new special airing Tuesday, September 2 (8:00 -9:00 p.m., ET). Check out the photo, then read on for details.

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The Story of Frozen: Making a Disney Animated Classic is an all-new, original special in a first-of-its-kind collaboration with Lincoln Square Productions and Walt Disney Animation Studios. The special ventures behind-the-scenes for an exclusive look at the origins and evolution of the Academy Award-winning film Frozen, now the biggest animated feature of all time. A breathtaking and fantastic saga, the special tells the real story of making a modern movie based on a timeless tale that nearly overnight became a cultural touchstone for legions of fans.

Viewers will get a rare look inside Walt Disney Animation Studios and unprecedented access to the creative team that brought Frozen to life. Throughout the one-hour special, the audience will hear from Frozen stars Kristen Bell and Idina Menzel, the directors, songwriters, producer and artists and chief creative officer John Lasseter - the team who dreamed of making a cherished Hans Christian Andersen story into a big screen animated musical. Viewers will take a journey to the beautiful Norwegian villages and landscapes that inspired the look of Arendelle - the fictional kingdom - and see images and footage from the research trips to Norway, Quebec and points beyond that helped create the film's unforgettable look and feel.

This special will also include some exciting announcements about the next chapter of Frozen and a never-before-seen preview of Frozen characters Anna, Elsa and Kristoff on an upcoming episode of ABC's smash-hit Once Upon a Time.

The program will culminate in an exclusive sneak peek at the action-packed comedy-adventure Big Hero 6, currently in production at Walt Disney Animation Studios -under wraps until now - as the team prepares their next big-screen epic.

The Story of Frozen: Making a Disney Animated Classic features interviews with Frozen stars Kristen Bell (voice of Anna) and Idina Menzel (voice of Elsa) as well as Walt Disney Animation Studios' chief creative officer and Frozen executive producer John Lasseter, Academy Award-winning filmmakers, including directors Chris Buck and Jennifer Lee, producer Peter Del Vecho, and songwriters Robert Lopez and Kristen Anderson-Lopez. This one-hour special will also feature exclusive insights and commentary from art director Mike Giaimo and talented artists from the art direction, animation and effects teams. The exclusive sneak peek of Big Hero 6 is presented by the film's directors, Don Hall and Chris Williams.

The Story of Frozen: Making a Disney Animated Classic is produced by Lincoln Square Productions. Jeanmarie Condon is Senior Executive Producer and Rudy Bednar is Director of The Story of Frozen: Making a Disney Animated Classic.

About Frozen:

Walt Disney Animation Studios, the studio behind Tangled and Wreck-It Ralph, presents Frozen, a stunning big-screen comedy adventure. Fearless optimist Anna (voice of Kristen Bell) sets off on an epic journey-teaming up with rugged mountain man Kristoff (voice of Jonathan Groff) and his loyal reindeer Sven-to find her sister Elsa (voice of Idina Menzel), whose icy powers have trapped the kingdom of Arendelle in eternal winter. Encountering Everest-like conditions, mystical trolls and a hilarious snowman named Olaf (voice of Josh Gad), Anna and Kristoff battle the elements in a race to save the kingdom. The film is directed by Chris Buck (Tarzan, Surf's Up) and Jennifer Lee (screenwriter, Wreck-It Ralph), who also wrote the screenplay. It is produced by Peter Del Vecho (Winnie the Pooh, The Princess and the Frog). Featuring original songs from Kristen Anderson-Lopez (In Transit, Winnie the Pooh) and Tony winner Robert Lopez (The Book of Mormon, Avenue Q), and an original score by Christophe Beck (The Muppets, Oscar-winning short Paperman), Frozen won two Academy Awards (best animated film and best original song with "Let It Go") and a Golden Globe (best animated feature film). It is the fifth highest grossing film of all time and the highest grossing animated film earning more than $1.27 billion globally. Released wide domestically on Nov. 27, 2013, Frozen posted the No. 1 industry all-time Thanksgiving debut and Walt Disney Animation Studios' biggest opening ever. The film's Feb. 25 digital debut was the biggest digital release (sell-through) ever; it's Blu-ray/DVD release on March 18 was No. 1 on the Nielsen overall disc charts for eight nonconsecutive weeks. The Frozen soundtrack is the top-selling album of 2014 and spent 31 consecutive weeks in the top 5 on the Billboard 200 chart, including 13 nonconsecutive weeks at No. 1. It is certified triple Platinum, selling more than 3.2 million units. The "Let It Go" film clip from Frozen has been viewed nearly 300 million times on YouTube.