Karen Koster: Karen Koster. Producer: How Billy Stole Christmas. Karen Koster was born in Killiney, County Dublin, Ireland. She is known for How Billy Stole Christmas (2009), The 1st TVNow Awards (2006) and Xposé (2007). She has been married to John McGuire since 6 June 2013. They have three children.
Known For: How Billy Stole Christmas (Producer), The 1st TVNow Awards (Producer), Xposé (Self - ReporterSelf - Presenter), 10th Annual Irish Film & Television Awards (Self - Guest Presenter)