Michelle McCool (born January 25, 1980) is an American professional wrestler. She is best known for working with World Wrestling Entertainment (WWE) where she competed on its SmackDown! brand. McCool was the first ever WWE Diva's Champion. She is married to fellow professional wrestler Mark Calaway who is better known by his ring name, The Undertaker. They had their first child, Kaia Faith Calaway on August 29, 2012.