It was the second WrestleMania held in the state of Texas , with the first being WrestleMania X-Seven , at the Reliant Astrodome , also in Houston , which was held in 2001 . The tagline for the event was `` Everything is bigger in Texas , especially WrestleMania . '' As the second WrestleMania to be held in Houston and the state of Texas , WWE mainly promoted WrestleMania XXV under the tagline `` Everything Is Bigger in Texas , Especially WrestleMania '' since its announcement at WrestleMania XXIV in April 2008 .