"It's far enough along that I can share it. And I am sharing it right now for the first time."
The Million Dollar Baby star declined to reveal when the twins are due.
Hilary, who has been married to Philip since 2018, claimed in a 2020 interview that she was "very maternal" even though she was yet to have children.
She said: "I feel like so much of the time women who either choose not to or can't have children are somehow seen as not maternal or not mothering and it is a conversation that needs to be had, because... I've heard a lot of women say that they've been told, 'Oh, you're kind of a failure'. Or, you know, 'Didn't you come here to procreate? There are so many different ways to procreate!'
"Any type of mothering, any type of nurturing, is being a mother."
