Biography

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 June 6, 2013. They have three children.

She graduated from Trinity College, Dublin in 2003 with a degree in English Literature and French.

(June 6, 2013) Married her boyfriend of 6 years John McGuire in Sicily, Italy.

Has three children with her husband John McGuire: two sons, Finn Edward McGuire (b. December 31, 2014) and John James ''JJ'' McGuire (b. February 29, 2016), and one daughter, Eve McGuire (b. June 8, 2018).