Kellie Pickler has made quite a pretty penny with her country career! According to Celebrity Net Worth, the “Red High Heels” singer, 37, who skyrocketed to fame onAmerican Idol, is currently worth $4 million. Over the years, Pickler has accrued her money from her work in the music industry. In 2006, the blonde beauty signed with 19 Recordings/BNA Records after coming in sixth place during the singing competition show’s fifth season. Pickler recorded her debut album, Small Town Girl, in the same year, which reached No. 1 on Billboard’s Top Country Albums chart, with 79,000 sales in its first we…