John Mulaney to Host 'Saturday Night Live' with Musical Guest Thomas Rhett!

John Mulaney and Thomas Rhett are teaming up for Saturday Night Live! The sketch show announced that the 36-year-old comedian and actor will be hosting the show with the 28-year-old country singer as the musical guest on Saturday, March 2. PHOTOS: Check out the latest pics of John Mulaney John hosted Saturday Night Live for