She didn't adopt kids. She bought herself some nice accessories...
You spoiled it, just like I spoiled you.
Maybe I did it for a little publicity.
She could afford expensive props.
She must have been crazy.
My theory is Joan was at MGM and not liked by Louie B. Mayer who thought of her as common. L.B. had a mother fetish so Joan decided adopting some children would improve L.B.'s opinion of her and give her a new image as she grew to old to play the singletons she played in the thirties. And just generally increased publicity as she aged and her career was beginning to wind down.
The twin on the right looks like a doll.
Christina is fugly.
Another side note:
You could've posted this in the ongoing Joan Crawford thread.