Glee: Diva Week!

So on Glee this thursday, this episode is a competition between cast members. Who's the biggest diva that will win Diva week?

At Mckinley, the competition includes most of the girls (including Unique) and Blaine!
Unique Vs. Tina Vs. Brittany Vs. Marley Vs. Kitty Vs. Blaine (From video below)

At New York, Kurt and Rachel try to prove who is the bigger diva and try to out sing each other. (My predictions from Promo)

Also, Santana comes back because Tina told her Sam is dating Brittany. They then challenge each-other to get Brittany (My predictions from sneak peek)

Here's a sneak peek of all of them singing Diva.