Former 'Coronation Street' star Joanne Froggatt has split from her fiancé.The actress - who played Zoe Tattershall in the hit soap - is said to be devastated after splitting from Phil Vane.The 'Bad Girls' beauty had been romancing the nightclub DJ for six years after they met in 1999.Joanne, 25, got engaged to Vane after they had been dating for just six months, and they had planned to tie the knot later this year.A friend of the star, who is set to play Myra Hindley's sister in a new ITV drama about the Moors Murderers, said she has turned to work to help her cope with the break up.The source told Britain's Daily Mirror newspaper: "They grew apart and it just wasn't working any more."Joanne is very cut up about it, but there is no chance of a reconciliation. She is throwing herself into her work."