Ashlee Simpson Ross has reportedly given birth to a daughter.

The 30-year-old star and her husband Evan Ross are said to have welcomed their little girl into the world on Thursday evening. At the moment there aren’t many details available, with no name or confirmation issued as yet.

“Their whole family was around to support them," a source told E! News. "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 be with her family."

This is a second child for Ashlee, who is already mother to six-year-old son Bronx with her ex-husband Pete Wentz. He couldn’t wait to become a big brother, with Ashlee explaining he was over the moon when he found out he’d be having a little sister.

“He's excited. He's so excited,” she previously smiled.

“He's excited that it's a girl. He thinks it's cute - the tea parties - she'll be adorable."

The star has kept busy throughout her pregnancy, regularly attending cardio barre classes at her local gym. It’s a ballet-type workout, which was apparently ideal for the star as she’s such a huge fan of dancing.

She also got together with her friends and family last month for her baby shower, with her sister Jessica Simpson on hand for the “beautiful and relaxed” evening.

Ashlee and Evan got married in August last year and announced she was expecting in December.