Kate Hudson sobbed during an emotional telephone reunion with her estranged sister

However, Kate also has three more half-siblings - Lalania, Zach, and Emily Hudson - from her biological dad Bill's other relationships, but they have been estranged over the years until they recently got back in touch.

During an episode of her podcast 'Sibling Revelry with Kate Hudson and Oliver Hudson', the actress explained: "I had this moment last year where I was like, 'I don't know why I don't talk to my other siblings.'

"I don't care what the history is with our parents, but - and especially me who has no sisters and I do. I have two sisters that I don't speak to for no other reason than our family is separated."

Kate went on to reveal she broke down in tears during a phone call with one of her sisters, saying: "My sister and I and my brother have all just started communicating again.

"And honestly, I got on the phone with my sister and we just started bawling our eyes out. It was so great.

"[My sister] even said it. We start now. We start now."

Kate added of her family: "I have a great family. I have a beautiful mother. I have a stepfather who stepped in and played a huge, huge part in sharing what it is to have a dependable father figure in our life, but it doesn't take away from the fact that we didn't know our dad.

"I think people sometimes just need to hear that they're not alone."