Miley Cyrus, Britney Spears,Zac Efron, Vanessa Hudgens, Kristen Stewart, Taylor Lautner, Chace Crawford and many other stars stepped out in style Sunday night in Hollywood for the Teen Choice Awards -- and ET was there!

ET caught up with the stars on the green carpet before the show and Miley Cyrus explains why she's excited for the big night and also dishes on her upcoming tour.

"I'm up for some awards so I'm stoked about that," she says. "I'm excited to perform my new song, I'm just excited to be here...My tour's coming up, I can't wait. It's a good way to kick it off, my song was the number two most added song on radio this entire year. So that's exciting to know that before the tour people are going to be able to rock along with my new music."

Zac Efron tells ET's Mark Steines why his teen years were very memorable.

"I feel like my life was defined by my teen years," he says. "That was when things really got exciting and I started thinking outside of the box and becoming an adult. It's where everything got exciting."

'Twilight' hunk Taylor Lautner tells ET about filming 'Eclipse' in Vancouver, and spills details about his plans for the future.

"The thing I love about acting is changing up roles and challenging myself to different things," he says. "I'd love to finish playing a werewolf in the 'Twilight' saga, and then do a comedy, then after that do an action drama, and a romance. Just changing things up a bit."

ET also caught up with music sensations the Black Eyed Peas, Kathy Griffin and her surprise date Levi Johnston, and "Gossip Girl" cutie Chace Crawford, who spilled details on his upcoming film 'Footloose.'

The 2009 Teen Choice Awards air tonight at 8 p.m. on Fox.