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Polly Perkins, best known for her role as Trish Valentine in Eldorado, is to join the cast of EastEnders as Dot Branning's sister, Rose.

The siblings have been estranged for most of their lives since Rose did the unforgiveable – embarked on an affair with Dot's husband Charlie.

However, after a bout of hypochondria Dot decides she needs to put things right and track down her little sister.

Flighty, fun and not one to grow old gracefully, Rose couldn't be more different to Dot and she certainly isn't pleased to see her after all these years. However, could it be that there is another reason Rose isn't glad that Dot has tracked her down?

Polly says: "I am thrilled to be joining the cast of EastEnders, the show is a real British institution with an extraordinary creative team. I'm really looking forward to working with June again, who I have been friends with for over 30 years."

EastEnders Publicity