The Sister Returns

The Sister Returns by Joanna Rees is the third novel in A Stitch in Time – a sweeping historical trilogy.
To have a future, she must confront her past . . .
It's 1929 and after running away from her family in Lancashire, becoming a dancer in London and having a riotous time in Paris with her best friend Nancy, would-be fashion designer Vita Casey is now living a much more sedate life in New York with her baby son, far away from her evil brother, Clement, and her nemesis, Edith.
When the disastrous events of the Wall Street Crash change their destinies, Vita and Nancy flee to Los Angeles, where Nancy is determined to make it in the talkies. Schmoozing their way into the ranks of the Hollywood elite, Vita is starting to think that she can begin to fulfil her fashion ambitions. But when the love of her life is hired as a writer on Nancy's new movie and Clement exacts his ultimate revenge, Vita's past and present collide.
She has no choice but to tell the truth and try to reclaim what is rightfully hers before it's too late.