It’s a girl!
“We are overjoyed about the birth of our precious baby girl, Jagger Snow Ross,” the couple wrote.
“Ashlee is doing amazing and their daughter is perfect,” a source tells PEOPLE. “She’s gorgeous!”
“Daddy @realevanross and my brother @rossnaess. It was an amazing night. #babyshower,” the mom-to-be captioned a photo of her sitting on a moon cut-out under a sky of hanging stars.
The couple announced they were expecting a baby together in December — and told PEOPLE exclusively in February that it was a girl! But despite already being mom to 6½-year-old son Bronx Mowgli, Simpson admitted everything felt like a whole new experience.