Hat Fancy is a shop located at Bikini Bottom Mall. This location only appeared in the episode, "Whale of a Birthday." They sell hats that are fancy. Not much else is known about this small shop. It is probably in the same business as Hats.
The outside of Hat Fancy appears to have a big, glass window with glass doors. It also has the words "Hat Fancy" written at the top in green text.
The inside of Hat Fancy can be seen and it appears to be similar to a shoe store except it sells hats.