Where can you buy a fat suit?

Where can one buy a fat suit like Amy Sedaris bought before she began working on Stangers With Candy? I'm looking for one that doesn not look completely fake like a sumo wrestle or anything. Something somewhat subtle .

shelbers7410:
jonny brocks

rjhefs:
eBay?

me..........anee:
hw fat r u ?????????????????????????????

tanya:
Halloween Costume place