The couple, who wed in February 2011, attended the 2014 Vanity Fair Oscar Party in West Hollywood on March 2 and Kayte apparently hid her burgeoning baby bump under a little black dress, reported Us magazine.
The couple are already parents to daughter Faith, 19 months. The birth of their first child together was bittersweet as they had initially announced that they were expecting twins, but tragically lost their baby boy.
"It was unspeakably painful and we know that people will understand our desire to keep the news private then, as we know they will respect our privacy in this matter now," the couple had said in a statement.