Twitter users are speculating the star's pregnancy could be her long game April Fools' Day prank. It seems unlikely, though it would earn the title of most elaborate celeb prank ever. Even including what Ashton Kutcher did to poor Justin Timberlake.Other Teigen prank guesses from Twitter include revealing the wrong gender of her baby to be or revealing she is not an expectant mother, but the mother of dragons. We'll just have to wait until Friday to see exactly how she's managed to fool us.