Ashlee Simpson's baby shower was absolutely gorgeous!

The 30-year-old singer and her husband Evan Ross announced that they would be having a baby back in December.

The two are having a baby girl, and they made sure the baby shower was relaxed and simple, People exclusively reported. 

Her mom, Tina Simpson, helped arrange the 65-guest event, which was held at Ashlee's sister Jessica's house.

"It was beautiful weather and her house was the perfect setting...so gorgeous," one of the guests said. "It was very chill and almost like just a get-together than a traditional shower. It wasn't focused on games [and was] more like a big party."

Ashlee wore a "super-flowy, Bohemian-style" outfit, and had no problem also celebrating Tina's recent engagement to boyfriend Jon Goldstein.

"Everyone was talking about Tina's engagement and about her ring," the guest continued. "She seemed really happy."

Ashlee and Evan have been married since last August. This will be their first child together, but Ashlee's second child. She has a 6-year-old son, Bronx, with her ex-husband Pete Wentz.