Ashlee Simpson & Pete Wentz Throw Bronx A Birthday Bash

Ashlee Simpson and Pete Wentz had friends and family help celebrate Bronx's third birthday on Monday (November 21). Guests, including a pregnant Jessica Simpson, met up at The Coop in Los Angeles, Calif. Ashlee's boyfriend Vincent Piazza was also in attendance.

When they left the play place, both mom and son were seen with their faces painted like cats!

Ashlee, who has teamed up with her sister on the Jessica Simpson Girls line, recently told fans that she wears clothing from their collection.

She wrote: “Loving the cool nordic leggings from the tween line. I even rock them myself!”