Jennifer Garner turns 38 tomorrow, and we're getting a jump start on celebrating with today's edition of Flashback Friday. Check out this 2005 appearance on The Tonight Show when Jennifer was pregnant with her and Ben Affleck's first child. The two hadn't divulged whether she was having a boy or a girl — Jennifer accidentally let the cat out of the bag when she revealed that their baby was a "she." Her reaction is priceless! Now she and Ben are the proud parents of both Violet and Seraphina, but take a look at Jennifer from before she was a mom.