With her pregnancy getting further and further along, Ashlee Simpson is leaving the performing duties up to her husband and soon-to-be-babydaddy Pete Wentz .

And last night, the Fall Out Boy rocker and his bandmates took the stage at the Victoria’s Secret Pinkapalooza event at the Pier in Santa Monica, California.

The parents-to-be looked to be having a great time with Pete rocking a blue zip-up hoodie, red t-shirt, and black Diesel jeans, while his “La La” singer wife sported a printed summer sundress.

According to Star magazine, Ashlee and Pete will be having a baby girl, and she could be born on Halloween. "Ashlee and Pete are on cloud nine. The doctor told them they actually conceived the baby just before Valentine's Day while they were on vacation and has given them an initial due date of Oct. 31. When Pete heard he might have his baby on Halloween, he went nuts. For an emo-rocker type like Pete, that would be just too perfect!"

Gossip Girls

Enjoy the pictures of Ashlee Simpson and Pete Wentz at Pinkapalooza (July 17).

Photo Credit: FlynetOnline.com