Ashlee Simpson's Bittersweet World

Ashlee Simpson premieres her new “Outta My Head” music video on TRL Tuesday in New York City (aired Thursday afternoon).

“I had been thinking about it, but then I guess today I just decided that I’m gonna call my album Bittersweet World,” she said. “It’s the title of one of the songs on my record. I was contemplating Color Outside the Lines for a while, but Bittersweet World is the one I feel. … It’s kind of how I feel about the world right now.”

“[Bittersweet World] definitely influenced by ’80s music,” she said. “I wanted to do music with beats, I wanted to step outside the box. It’s where I am in my life. There’s parts of the record that are ’80s-influenced, because that’s just kind of where I’m at right now. I’m more laid-back, and I want to dance around, and I kind of laugh at things a lot, so you’ll hear that on the record.”

Bittersweet World hits stores worldwide in March 2008.

20+ pictures inside of Ashlee Simpson‘s Bittersweet World…