Kate Hudson and her older brother Oliver Hudson have an incredible relationship, and even have their own podcast, Sibling Revelry, where they talk about their upbringing and chat to celebrity siblings.MORE: Goldie Hawn and Kurt Russell's unusual punishment for Oliver Hudson revealedAnd while Goldie Hawn's children have admitted to having "tough moments" during their childhood - like any other brother and sister - they are now closer than ever.While appearing on a recent episode of Slate's