She later left the tour to launch her own Dream Chaser Tour (2001), for which Simpson added choreography and backup dancers to her performances; the tour was cancelled following the September 11 attacks.
Simpson's third studio album, In This Skin (2003), was released the day that Newlyweds: Nick and Jessica premiered, with the show serving as a promotional tool for the record.
She later released a Christmas themed album, Re Joyce: The Christmas Album (2004), which earned a gold certification from the RIAA.
She made her film debut as Daisy Duke in the film adaption of The Dukes of Hazzard (2005); it was commercially successful, though received a negative critical reaction.
The show became a pop culture phenomenon and made Simpson and her husband household names.
The marriage did not last, however, and by November of 2005 Simpson and Lachey confirmed they were separating; Simpson filed for divorce the following month citing irreconcilable differences.
The song most notably entered the top ten of the i Tunes Store at the same time as her sister's single "Invisible" (2006), marking the first time that two siblings had appeared simultaneously in the store's top ten.
Both lines were cancelled following a string of lawsuits.
Simpson began working on her fifth studio album in 2005.
She also recorded the song "These Boots Are Made for Walkin'" (2005) for the film, which went on to become her fourth top twenty hit on the Billboard Hot 100.
Aside from her musical pursuits, she launched The Jessica Simpson Collection in 2005, a fashion line of clothing and other items.