Ashlee Simpson Celebrates Bronx's B-Day with Pete & Vincent

Celebrating her son Bronx’s third birthday, Ashlee Simpson was spotted out and about in Los Angeles last night (November 21).

The “Pieces of Me” songstress was joined by both her ex-husband/Bronx’s dad Pete Wentz as well as her new main squeeze Vincent Piazza, making for an awkward outing.

Ashlee and her boys all headed over to The Coop, a modern play space for both kids and adults before grabbing some food at Mexicali restaurant.

Also along for the ride were Ashlee’s sister Jessica, mother Tina, and Jessica’s fiance Eric Johnson.

Enjoy the pictures of Ashlee Simpson with Pete Wentz, Vincent Piazza, Jessica Simpson and Eric Johnson celebrating Bronx's birthday at The Coop in Studio City (November 21).