The Grammy and American Idol-winning singer will perform at the christening ceremony of NCL’s 17th ship in Miami on 21 November.

NCL president and chief executive Andy Stuart appeared on Clarkson’s TV show to ask her to take up the role.

To celebrate the announcement, Clarkson gifted 20 music teachers with a seven-day cruise.

Encore will initially sail from Miami to the Caribbean and later move to Seattle for Alaska cruises in spring 2021.

The ship features the world’s longest race track at sea at 1,100 feet.

Clarkson said: “I am so honoured to be named the godmother to Norwegian Encore, and to get to be a part of such a special ceremony to christen the new ship in Miami.

“I believe that surrounding yourself with the ones you love and taking time for them is important while having the most amazing and unforgettable vacation, which is what Norwegian Cruise Line stands for and provides for its guests.”

Stuart added: “We knew we wanted someone who represents our core values. Kelly is a role model who is passionate about family and community, as well as music and entertainment.

“These are our passions too. We are honoured to have her join our family of godparents and look forward to celebrating Norwegian Encore’s debut in Miami with her, this November.”