She and husband Eric Johnson are already parents to daughter Maxwell and son Ace.
To celebrate the arrival of their baby girl, the pair had what looks to be a beautiful baby shower. Can I just mention how stunning Jessica looks posing with Maxwell?
And what about this epic pic of all the Simpson gals: sister Ashlee, Ashlee's daughter Jagger, mom Tina, and Maxwell.
Jessica is seriously a gorgeous mama-to-be.
Also, take a look at the captions for the photos. Seems to me like Jessica is announcing that her daughter's name might be Birdie!