Kelly Clarkson, 39, is one of the biggest household names but that hasn’t stopped her from going through with legally changing her name. The American Idol star has dropped her last name, as confirmed in docs obtained by Page Six. “There being no objections, the petition for change of name is granted,” the docs read. “The Decree is signed and filed. The Petitioner’s name is changed from KELLY BRIANNE CLARKSON to KELLY BRIANNE.”