Ke$ha posed for photos on the red carpet at the 2012 American Music Awards at the Nokia Theatre L.A. Live on Sunday night, and she's not our pick for best dressed, but she does win the most improved award!

The 25-year-old singer will perform her latest single “Die Young”, and after tonight's show, she'll be busy promoting her new album, Warrior, which hits stores on December 4.

Of her new music, K Money recently told Vibe magazine, “The first record was a celebration of partying and being young, but this record’s a better look at my personality. Whatever, I drink like a champion. But I can also do other stuff. I have a sense of humor about my lyrics. I’m not a train wreck, I’m just having fun.”

Awww, looks like they're ready for prom! Well, a sophisticated 30-plus prom!

“Getting ready for #amas almost done, need to find hubby and my clothes,” Pink tweeted before the show. “Found the clothes, now where’s that @hartluck?” Ha!

The 33-year-old singer will perform her song “Try” during the show ... you KNOW there's gonna be a wardrobe change, so we can't wait to see what Willow's mama slips into for her set!

But is it just us, or did Gwen Stefani TOTALLY pick out bandmate Adrian Young's outfit? It looks like something straight off the L.A.M.B. runway!

No Doubt hit the red carpet at the 2012 American Music Awards in Los Angeles on Sunday night, and while they're not nominated for any awards this year, the group are set to take the stage later this evening. Push and Shove just came out in late September, so even though they missed the mark for the AMAs, we're guessing they've got their eyes on Grammy gold. Those nominations will be announced on December 5.

Can't wait for their back-to-back shows at the Gibson Amphitheater in LA, which kick off next week. Will you be going?

Chris Brown hit the red carpet at the 2012 American Music Awards at the Nokia Theatre L.A. Live on Sunday evening, and this leather ensemble is actually a pretty tame outfit -- for him, anyway!

The 23-year-old R&B superstar is nominated for Favorite Soul/R&B Male Artist and Favorite Soul/R&B Album for Fortune, and he's going to perform “Everyday Birthday” with Swizz Beatz and Ludacris during the broadcast. Can't wait to see what he has in store!

Hayden Panettiere may not be winning an American Music Award tonight (she's presenting), but the 23-year-old actress has won us over with her fab figure and stunning sequined dress! And those matching satin peep toes? To die for!

But maybe next year she could be walking away with some hardware from the AMAs? After all, that's actually her singing on Nashville, and if you ask us, she's pretty good at it! Then again, we looooove the show, so we are a little biased!

We're not sure what's more over the top -- Christina Aguilera's spray tan or Nicki Minaj's hair!

We'll give Xtina a hand for lopping off the pink tips and going for a sleek bob, but how about this purple Pamela Roland dress? It doesn't really do wonders for her body, and the orange hue of her skin isn't the best match for the lavender frock. But again, bonus points for the hair...

On the other hand, Nicki killed it with her look, even if it is a bit on the neon side. Come on, would you really expect her to go for a subtle LBD? This girl is all about flashing her brights! And it must be her lucky dress, because she just won her first award of the evening, for Favorite Rap/Hip-Hop Album for Pink Friday: Roman Reloaded. Congrats!

Justin Bieber and Selena Gomez are far from breaking up ... the teen heartthrobs spent the night together AGAIN last night, after a quiet night in on Friday, the two pop stars hit the recording studio Saturday night to get some work done.

Some other famous voices joined Selena in the studio ... but we'll tell you more about that later ...

Bieber joined Gomez at Conway Studios around 10pm and they stayed until midnight before leaving in Justin's van, back to the Four Seasons Hotel, where he's been staying (when he's not sleeping over at Selena's house).

We got a single snap of Selena as she made her way into the hotel, but Bieber was playing hard to get :)

It's a tween dream! Miley Cyrus and Taylor Swift joined Selena Gomez at Conway Studios yesterday, for what appears to be a top-secret project ...

The American Music Awards are tonight -- maybe they're doing a quickie track for the show?

Miley joined Selena at the recording studio around 2pm Saturday and stayed for about two hours. Then Taylor arrived around 7pm and she and Selena left for dinner at Osteria La Buca in West Hollywood. After, they both went back to the studio and Taylor stayed for another hour.

We all know what happened next ... Justin Bieber arrived to join his girlfriend before heading back to his hotel together to spend their second night in a row together!

So just WHAT are Miley, Taylor and Selena cooking up?