She finally popped!

Ashlee Simpson and husband Evan Ross welcomed a baby girl on Thursday, Us Weekly reports. This is the first child for Ross and the second for Simpson, who has son Bronx with ex Pete Wentz.

"Their whole family was around to support them. Evan was very emotional and loves Ashlee so much. 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 to be with her family," a source revealed to E! News.

The pair married last August and announced they were expecting this past winter.

Congrats on the new arrival guys!