OK every girl had to own one or the other unless you were extremely 'lucky' at the time and had both! Ra Ra's were skirts layered with one or two extra tiers. Whereas a Puff ball skirt was made of material double the length that it needed to be which went from the waist down to the length you wanted then folded over back up to the hem - with basically 'air' inbetween! I'm glad I've not got any photos to send in!!