They're all wearing heels, if you look closely.
Maybe besides needing sparkle and charisma (and Barbie's huge gravity defying breasts) you need her "fresh-from-the-footbinder, have-to-wear-high-heels-because-her-feet-are-deformed" tootisies...
By the way, any word on who are the poor schlubs who wrote the songs for this abomination?
"A coherent existance after so many years of muddle" - Desiree' Armfelt, A Little Night Music
"Life keeps happening everyday, Say Yes" - 70, Girls, 70
"Life is what you do while you're waiting to die" - Zorba