Just a quick note, for those of us afflicted with gigantism, Casual Male XL has a Navy blue sportcoat and heather gray dress pants which are perfect for the blazer combo and the the aviator whites / golf shirt combo(s).
They shipped in 2 actual days, including hemming the pants, and the stuff fit out of the box (well, the pants are a little long).
I'm not going to make the cover of GQ with this stuff, but at least it fits and fits the regs.