Luann de Lesseps[1] (née Nadeau, previously D'Agostino; born May 17, 1965)[2][3] is an American television personality, singer, model, and author.

She is best known as an original cast member of the Bravo reality television series The Real Housewives of New York City, featuring in the first 13 of 15 seasons since its 2008 premiere.

[6][7] In an early episode of The Real Housewives of New York City, de Lesseps shared that she had captained her high school varsity softball team.

For the sixth season, she was demoted to a recurring "Friend of the Housewives" role due to not living in New York City at the time of filming.

In February 2011, de Lesseps guest starred on Law & Order: Special Victims Unit, in the episode "Bully", playing a socialite who makes a gruesome discovery.

The roast, which was produced by Daniel DeMello and directed by Rachel Klein, was hosted by Bruce Vilanch and introduced by Rosie O'Donnell.

[21] The show features de Lesseps singing songs about her life as a countess and reality TV star, with appearances from celebrity friends like Rachel Dratch and Housewives co-star Sonja Morgan.

[27] On September 29, 2023, de Lessups was telecast judge of the 72nd Miss USA pageant held at the Grand Sierra Resort in Reno, Nevada.

[28] In July 2024, it was announced that de Lessups would be starring in a Real Housewives dating show spin-off titled Love Hotel on Peacock, alongside fellow housewives Gizelle Bryant, Ashley Darby and Shannon Storms Beador, with filming taking place in Cabo San Lucas and expected to premiere in 2025.

[36] de Lesseps has donated to many charitable organizations, including: The American Cancer Society, GLAAD, and ACE Partnership for the Homeless.