Kacey Musgraves, Album of The Year Grammy recipient has been trending on twitter for all the right reasons lately. Her Houston Rodeo Show on Monday February 25 made headlines news as she covered Selena's "Como La Flor". During her Nashville show, she kicked off singing an 80's classic "Girls Just Want To Have Fun" and during the second verse she brought out Paramore's Haley Williams. They sang this together and looked smoking hot doing so. See for yourself below: