Fans of ABC's 'Once Upon a Time' will see Frances O'Connor as Colette, Belle's mother, in the upcoming fourth season of the show which is scheduled for premiere on September 28.

A recent report by the Entertainment Weekly says that the Australian actress will feature in a series of flashbacks in the sixth episode of 'Once Upon a Time' Season 4, with the possibility of returning in future episodes.

O'Connor is famous for her super performance on the prime time soap 'Cashmere Mafia'. Currently, the Australian actress is a member of the regular cast of the British period drama 'Mr. Selfridge' and is also getting ready to feature in the upcoming series 'The Missing'.

For the meantime, Jennifer Morrison, who portrays the character of Emma Swan, took a break from filming and shared a photo of her and the other cast members of 'Once Upon a Time' on Twitter. Zap2it reports that Morrison tweeted a picture of her and Lana Parilla, Elizabeth Mitchell, and Georgina Haig while dressed as their characters.

She captioned the photograph, "Day 11: night shoot with these ladies @LanaParilla @GeorginaHaig @ElizabethMitchell 101smiles #UglyDucklings."

'Once Upon a Time' Season 4 will have a number of new casts, including Haig and Mitchell. Haig will be portraying the character of Elsa from Disney's 'Frozen' film, while the show creators have yet to reveal any details regarding Mitchell's role. Nevertheless, it is rumored that she may be portraying a villain inspired by those in the 'Frozen' universe.

According to another report, the first six episode titles of 'Once Upon a Time' Season 4 have been revealed. Season 4 will start with "A Tale of Two Sisters" which will introduce the 'Frozen' characters. The second episode is entitled "White Out," the third is entitled "Rocky Road." The fourth is "The Apprentice," followed by "Breaking Glass," and the sixth is titled "Family Business."