Ashlee Simpson and Evan Ross welcomed their first child together [1], a baby girl, on Thursday night, E! News confirmed. The couple, who wed in a gorgeous ceremony in August 2014 [2], later took to Instagram to share the baby's name. "We are overjoyed about the birth of our precious baby girl Jagger Snow Ross," the image reads.

Ashlee and Evan were surrounded by their family when Jagger Snow made her big debut. "Evan was very emotional and loves Ashlee so much," a source told E!. "He did not leave her side and wanted to go through this with her every step of the way. He can't wait to be a dad. He would do anything for Ashlee and now this baby girl. Ashlee is doing great and can't wait to get home to be with her family." The little girl joins Ashlee's 6-year-old son, Bronx, whom she shares with her ex-husband, Pete Wentz.

As the baby's birth quickly approached, Ashlee showed off her baby bump [4] and kissed Evan during a shopping trip on Monday. The couple also shared new snaps from their beautiful wedding [5] in August. Congrats to the happy family!