Alex Kapp, Actress: The New Adventures of Old Christine. Alex Kapp was born on December 5, 1969 in New York City, New York, USA as Alexandra Kapp. She is an actress and writer, known for The New Adventures of Old Christine (2006), Seinfeld (1989) and Dva a pul chlapa (2003). She has been married to Christian Horner since September 2, 1995. They have two children.