To save you all from the irrelevant torture that overtook this video, I have made a sacrifice to watch the whole thing to find the Queen B. The most important part of this video is 1:05.
My question who was the dumb ass that put Britney's part right after Christina's. Xtina comes in with a Roar of a lion and then Britney follows with the purr of a newborn kitten. like WTF