Make an educational display

You take a minute to wrangle the naked cheerleaders. Roughly sixty seconds later, you have six of them linked together by the wrists, with the outermost girls linked to opposite walls such that you have a lovely garland of naked girls. Over their heads is a banner reading "What are the Cup Sizes?" The flat girl on the far left has an "A" painted over her right breast. The girl next to her is labeled "B", then "C", "D", "DD", and you were lucky enough to find an E-cup for the far right.

"Cute!" laughs Daisy, joining the elf students as they laugh and gawk at their classmates.

"Hey, how long do you think we could get it?" you say, turning to Banti. "Do moon elves ever get bigger than that?"

"You can try," said Banti. "I've seen some pretty shapely moon elves."

"And if we have to enhance a few to make it work, fine!" says Daisy. "After all, this is for the sake of education!"

Of course, it doesn't take long for this display to catch the attention of the rest of the school. You seem to have been noticed by some faculty, some of which are very lovely ladies. Maybe their breasts would be worth a check?