Ashlee Simpson [ tickets ], who scored a No. 1 album with her 2004 debut, "Autobiography," will embark on her inaugural headlining tour in 2005.

The outing is scheduled to open Feb. 2 in Houston, and so far is set to visit about 30 cities over two months.

Like her older sister, Jessica Simpson, Ashlee is the star her own MTV reality show. The second season of "The Ashlee Simpson Show," which begins airing Jan. 5, will focus on her preparations for the road, according to Geffen Records.

Before embarking on the tour, Simpson is scheduled to make some December appearances at radio-station sponsored holiday festivals. Details are in the itinerary below.

She is also scheduled to perform during Wednesday's (12/8) Billboard Music Awards, where she's a finalist for Female New Artist of the Year. Additionally, she'll be a presenter on the program, which will air live from Las Vegas on Fox-TV.

Simpson's other upcoming television appearances include Dec. 17 on NBC's "Tonight Show" and Dec. 22 on the CBS special "A Home for the Holidays." On Jan. 4, she'll perform her new hit "La La" during halftime of college football's FedEx Orange Bowl, which takes place at Miami's Pro Player Stadium.

Despite her No. 1 album, driven this summer by the hit "Pieces of Me," Simpson became better known for a live flub on an October "Saturday Night Live" episode, when pre-recorded vocals for the wrong song could be heard playing as her band began to perform. She later said she was forced to augment her voice during that performance with recorded backing tracks because acid reflux caused her vocal cords to swell.