Sisters Kara and Hannah Tointon have joined the cast of ITV's Mr Selfridge.

Kara, who is best known for playing Dawn Swann on Eastenders, and Hannah, who played Katy Fox in Hollyoaks and Tara Brown in The Inbetweeners, will play sisters on the period drama.

The siblings are set to depict entrepreneur Harry Gordon Selfrige's (Jeremy Piven) daughters Rosalie and Violette.

A source revealed to The Sun: "Kara and Hannah are great additions and everyone is delighted they have been cast as Rosalie and Violette.

"They are both gorgeous girls and Hannah's character, Violette, has a very rebellious streak so it won't be long before she starts shaking things up."

Former Coronation Street star Sacha Parkinson has also joined the cast as shop assistant Kitty Kawkins' sister, while Zoe Wanamaker will play Russian princess Marie de Bolotoff.

The third series of Mr Selfridge starts filming in London this week and will focus on the Selfridge family in the aftermath of the First World War.

The show's executive producer Kate Lewis opened up about the fate of Harry Selfridge, saying: "We have some surprises in store for the audience in the third series.

"You only have to walk down Oxford Street today to know that Selfridge's department store continued to be successful.

"But for its founder, Harry Selfridge, things were very different. His story was a roller-coaster ride that ended rather tragically. 

"We pick up series three in 1919 - the point at which his life really begins to unravel."