Hi Jackie - yes, I'm afraid that if there is any part of a logo, that may still be recognisable, the garment will be ineligible for entry.
Last year, one of our entries was made with tea bags, complete with the tiny tag hanging off and that designer was required to cover each and every tag so the brand was no longer visible.
I do hope you can find some way around this issue to still be able to enter your garment.
Regards, Ingrid
Ingrid Peek
Wardrobe & Historic Collection Manager
+64 3 547 0864
ingrid@worldofwearableart.com