’90 Day Diaries’: Tom Shocks Mariah With His New Teeth (Exclusive)

In this exclusive sneak peek at “90 Day Diaries,” Tom is getting new teeth! He plays a trick on fiancé Mariah showing off a new look that isn’t what it seems to be as she tries to play it cool. “90 Day Diaries” airs on Mondays at 9/8c on TLC.