Here's a quick guide to those who did and did not have a bubble butt in this music video (In order of appearance):
Three white girls with blue hair: no bubble butt.
Gigantic black lady: bubble butt.
First girl that appears in a bubble (wearing blue): yes, a bubble butt.
Second girl from the bubble (wearing pink): yes, a bubble butt.
Third girl from the bubble (wearing feather boa): yes, a bubble butt.
Three girls dancing in the center with ponytails: NO bubble butts.
Lady hanging from the ceiling: yes, a bubble butt.
Blond woman with awful wig: no bubble butt...
Two white girls with blue hair from earlier: fake bubble butts.