Prove how dedicated your Fan Army is in MTV's "Big & Best of 2012"!

"The Big & Best of 2012" all-day-long pop culture and pop music live stream (don't miss it on 12/12/12 at 12 p.m. ET!) will feature eight hours of our fave stars (like Carly Rae Jepsen) and pop experts recapping the craziest and most memorable moments of the year. But it'll ALSO feature a very real and possibly very ugly battle for the best fan army. We're talking "Last Fan Standing." So Justin Bieber Beliebers? Are you still licking your wounds from that tough VMA loss against One Direction's Directioners? Britney Spears Stans: Do you want your voices heard? Katy Perry KatyCats, are you gonna claw your way to the top? Well, here is how you can prove your ultimate fandom.

Read more about the "Big & Best Of 2012" and prove YOUR fandom after the jump.

Head over to MTV's Facebook, go to "Photos," and share the photo of the celebrity you support until your fingers are sore (this is not recommended; always be safe when clicking, guys). Do you live for every word Lady Gaga says like every good Little Monster should? Share away! Are you a member of the Rihanna Navy? Ship out and share immediately!

Here's the most important deet: Only the Top 7 most shared Fan Army photos will advance to the next round. We've got more challenges and more surprises next week, so click that share button until it hurts!

+ Find out how to advance your fan army to the next level in this MTV News video.

Big & Best of 2012: A Year End Celebration Presented by T-Mobile goes LIVE at 12 p.m. on 12/12/12. Watch at www.bigandbestof2012.com for 8 hours of LIVE performances by Grace Potter, Metric, Alt-J, Thompson Square, First Aid Kit, and Dustin Lynch, plus surprise guest appearances, prize giveaways, special editions of "RapFix Live," "Big Morning Buzz Live," "MTV News After Hours," "You Oughta Know," and much more!!

Photo credit: MTV