But who's watching Bronx!?!

J/K, we're sure Bronx is happily at home with his grandparents/Auntie Jessica/a nanny while his parents get in some "me" time.

Yesterday, Pete Wentz took his fro to LAX where he caught a plane for Dallas and tomorrow's big Super Bowl game while Ashlee hit Hollywood hotspot Trousdale with a couple of girlfriends.

Sporting a plaid shirt, blue fingernails and her adorable pixie haircut, Ash accessorized her grungy look with a very un-grunge Chanel purse!

Pete, meanwhile, continues to rock his natural locks, a grandpa sweater and a similarly upscale accessory: a Louis Vuitton backpack.

And we thought we spotted a message to his wifey on Pete's shirt: