The 'Mr Know It All' singer will serve as the grand marshal for Krewe of Endymion parade, a celebration which ushers in Mardi Gras festival.
Clarkson is not only appearing in the parade, but will also perform at the Endymion's ball at the Superdome later in the day on February 9.
Fellow American Idol star Taylor Hicks previously served as the parade's celebrity grand marshal in 2007.
Mardi Gras officially begins on February 12, 2013.
Clarkson made headlines earlier in the week by revealing that she will vote for US President Barack Obama in the November election.
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Watch Kelly Clarkson perform 'Mr Know It All' below: