Michelle McCool got her first taste of the wrestling world when she competed in the inaugural RAW Diva Search in 2004. Unfortunately, Michelle didn't go too far in the competition as she finished in 7th place. In spite of her early dismissal from the contest, McCool made an impression during the festivities and she was signed to a WWE contract shortly thereafter. McCool would become a regular performer on SmackDown! a few months later with a personal trainer gimmick, a reference to a past occupation of hers. Unlike most of the other women who participated in the 2004 RAW Diva Search, McCool aimed to become an actual professional wrestler.

With only a few months of experience, Michelle would compete in her first wrestling in February 2005 on an episode of SmackDown!. McCool teamed up with the Big Show to take on Dawn Marie and Rene Dupree. McCool would emerge victorious in her first match as the Big Show ended up pinning Dupree. A few months later, McCool became apart of a feud between MNM and Heidenreich. McCool would feud with MNM member Melina, which would lead to a Melina winning her first match in WWE. After that match, MNM attacked McCool. This was McCool's last match before heading to train at Deep South Wrestling, a WWE development territory.

McCool made her return to WWE on the June 2, 2006 edition of SmackDown! as a heel with a "sexy teacher" gimmick. Since her return, Michelle has aligned herself with Kristal Marshall and feuded with Jillian Hall and Ashley Massaro. She currently manages Idol Stevens and KC James on SmackDown.