The mother of two shared an Instagram photo of her adorable blond 15-month-old daughter on Saturday, captioning the pic, "Maxwell is crazy beautiful."
The darling little girl sports her signature pout, along with a hot pink cupcake shirt and her blond curls.
And while Jessica's been spotted out and about without the latest addition to her family, we have sister Ashlee Simpson to count on to reveal what baby Ace looks like.
Jessica's younger sister tells E! News he looks just like cousin Bronx and is blond like his sister too!