I give Heddy's only a 4-star review because I haven't been in a few years. They used to be in teeny-tiny shop on Charleston, but they did have GREAT fabrics! I was needing super-stretch power Spandex, and they totally came thru like a champ for me. Better price than Williams Costume, but the fact the are closed on Sundays is a letdown.
Thry have some very very nice, expensive fabrics and notions, but i've yet to see it anywhere else in Vegas like it. If you are really into sewing, Heddy's is worth a visit!