Susan Sarandon is bracing herself for one of her biggest dramas after revealing her pregnant daughter is planning to give birth at home.

The Oscar winner will become a grandmother when Eva Amurri Martino's baby arrives this summer (14), and she's opening up about the big day.

She tells Closer Weekly, "Eva's going to deliver at home, so it'll be a very theatrical event... We're ready!"

The baby will be actress Amurri Martino's first with husband Kyle Martino. The couple wed in 2011.