Tux shopping... but hoping for not a tux...

We were hoping to go shopping today for FHs outfit. We were thinking of getting a suit and not a tux and trying on some lighter colors (like banana republic type).

Anyone have any suggestions of where to go or what to do? I have no idea what to do... he has no idea...

my DH wore a hugo boss suit if that helps so you don't have to rent a tux - my DH looked so handsome in his suit