Mythbusters "Build Team" member Kari Byron has announced that she is pregnant with her first child. "Guess which one of us is actually pregnant?" fellow "Build Team" member Grant Imahara asked in a video released on the show's Discovery Channel website. "That's right! I'm busting myths for two now!" Byron announced as Imahara and third "Build Team" member Tory Belleci removed fake pregnant bellies from under their shirts. The 34-year-old Byron has appeared on Mythbusters since the reality series premiered in Fall 2003. She is married to artist Paul Urich. Mythbusters' seventh season will premiere on April 8.