Streatfeild, Noel "Ballet Shoes" - 1936
Three adopted orphan girls take dance lessons. That's the main plot. They all have different kind of talents and different kind of views, that makes the story interesting.
I must admit, I never heard of this author before watching "You've Got Mail". But Meg Ryan described it so nicely, when I saw the book in our library (helping my son to find books), I just had to borrow and read it. It is a little old and you notice this when you read it, but, it's quite a nice story that you can still read more than half a century after it's been written.
From the back cover:
"Pauline longs to be an actress.
Petrova is happiest playing with cars and engines.
And if she could . . . Posy would dance all day!
But when their benefactor Great-Uncle Matthew disappears, the Fossil girls share a future of a dazzling life on stage, where their dreams and fears will soon come true . . ."