Most malls in the area (Arden Fair, Downtown Plaza) do have either a stand or store that does it. I m pretty sure the store in Arden is upstairs towards the East end. There is a place in Old Sac that does it, but I forget where it is.
I don t remember the name, but I m pretty sure there is place in Old Sac that does t-shirt airbrushing. I m sure the prices are jacked up because it s a tourist trap.