You can remove the hat and collar through the cat's menu. Click the cat > Prims > Clothes > select/deselect what items you wish.
Note the insignia on the side of the cat can not be removed, it is part of the costume.
“What greater gift than the love of a cat.” ― Charles Dickens
SL19B SteamPunk Kitty Q#2: remove SL19B attachments ?
