39. Demi Lovato
Favorite Team(s): Dallas Cowboys (NFL)
Dated An Athlete?: No
It's not that hard to figure out why Lovato became a Cowboys fan, and we're not just talking about the fact that she's from Texas. Lovato's mom was a Dallas Cowboy cheerleader. In fact, her mom wasn't the only one performing for the Texas team, Lovato sang for the Cowboys' Thanksgiving game in 2008, and sang the national anthem against the Seahawks in 2011.