Is there anything Jessica Simpson can't do? Since debuting as a teen idol with 1999's Sweet Kisses and then doing her part to popularize the reality TV format with Newlyweds, the bubbly Texan has sold 30 million albums, starred in numerous films and even colonized your local department store with her fashion line. Musically, she's worn many hats through the years, from the alluring pop star of In This Skin to the country crooner of Do You Know. You could say she's built a career out of people underestimating her: Whatever she sets herself to, she succeeds at.