If you noticed on Club Penguin that the members Santa Beard was added in the wrong section in your inventory. It was added as a face item rather then a neck item.
Members Santa Beard in December 2010 Penguin Style Catalog:
Unlockable/Free Item Santa Beard in Neck Items:
Check out the cool glitches you can do now. You can wear your Santa Beard and another neck item.
This is a very simple glitch to fix. All they need to do is go into there item files and edit the category Face to Neck. Maybe, I should work for Club Penguin fixing there bugs.