For your consideration, I have a Vintage High School Cheerleader LIONS Outfit Uniform 2 PC Size Adult Small.  This is in very nice condition - not sure of the age.  I'm guessing the 80's or 90's.  From armpit to armpit it is 15-1/2".  The top length is 20-1/2".  The skirt is 29-1/2" around waistband and is 15" from top of waistband to bottom.  This comes from a smoke free home.  I will be listing several vintage items so check out my other listings as I will combine shipping on multiple sales.