The "Veronica Mars" star showed off her growing baby bump at the premiere of "The Judge" in Los Angeles on Wednesday.
The blonde beauty looked gorgeous in her skin-tight black halter gown and side-parted 'do. The expecting star was joined by hubby Dax Shepard at the premiere and the cute couple posed for photos together on the red carpet.
This is the second child for the "Parenthood" actor and "Forgetting Sarah Marshall" actress -- the pair welcomed their daughter, Lincoln Shepard, in March 2013 and announced that they were expecting again back in June.
Bell and Shepard also tied the knot last October, after waiting to say "I do" until the Defense of Marriage Act (DOMA) was overturned.
We can't wait to see their newest family addition when he or she gets here -- what do you think about Kristen's red carpet look? Sound off below and click "Launch Gallery" above to see even more expecting stars!