In those first few months, when my regular jeans were still fitting but a bit more snug than usual, throwing on a scarf provided just the right amount of coverage. And now that I find myself relying on the same stretchy jersey dresses week after week, accessorizing with scarves makes it look like I actually put some thought into my outfit.
(Side note: if you use public transportation, make sure your belly is as visible as can be . . . you're much more likely to have someone give up a seat that way!)