The original judging panel consisted of David Hasselhoff, Brandy Norwood, and Piers Morgan. Sharon Osbourne replaced Norwood in season two (2007), and Howie Mandel replaced Hasselhoff in season five (2010). Howard Stern replaced Morgan in season seven (2012). Mel B replaced Osbourne in season eight (2013), while Heidi Klum joined as a fourth judge. Simon Cowell replaced Stern in season eleven (2016). Regis Philbin was the original host (season one), followed by Jerry Springer for two seasons (2007 -- 2008), followed by Nick Cannon for eight seasons (2009 -- 2016). Supermodel and host Tyra Banks replaced Cannon for the twelfth season (2017).
who is the presenter of america got talent
Tyra Banks