OKAY!
My idea:
I think you should keep Beth and Big Girl. BUT. Half way through Kylie comes out and shrieks 'HEY! WHAT'S THE BIG IDEA?!' Lollipop breaks out and Kylie and Beth sing with you. MFC'ers and normal people[] come out dressed up all as lollpop or big girls or whatever they want, pouring out so everyones up to their ears in Mika fans. Bright lights. Proper marching band. Confetti.
That'd be amazing.