Clarkson at pre-Mardi Gras parade
Kelly Clarkson will ride as celebrity grand marshal when the Krewe of Endymion parade rolls on the Saturday before Mardi Gras in 2013.
Kelly was the first winner of the Fox reality show American Idol in 2002. Her hits include A Moment Like This and Because Of You.
Organisers say she will perform at Endymion's ball at the Superdome after the parade.
The singer may be upstaged at the February 9 parade by a float that organisers say will be the largest and most elaborate in carnival history.
The super float will be 250 feet long and carry more than 200 riders. Its design focuses on Pontchartrain Beach, the amusement park that entertained generations on the New Orleans lakefront before closing in 1983.
Mardi Gras is on February 12.