Laura Huguette Smet (born 15 November 1983) is a French actress. She is the daughter of rock musician Johnny Hallyday and actress Nathalie Baye. In 1986, Johnny Hallyday recorded in her honor the song "Laura", written by Jean-Jacques Goldman.

She wanted initially to be a theatrical agent like her godfather, Dominique Besnehard. In 1999, she left school and began studying theatre with Raymond Acquaviva.

In 2002, she began her acting career when Xavier Giannoli, on the recommendation of Olivier Assayas, cast her in the role of Charlotte, a young cancer patient in Les corps impatients, and for which she received a nomination for the César Award for Most Promising Actress. In 2003 she starred in Claude Chabrol's film adaptation of the Ruth Rendell novel, The Bridesmaid (La Demoiselle d'Honneur).

In 2004, Smet won the Prix Romy Schneider. In 2006 she played in Le Passager de l'été, a film written and directed by Florence Moncorgé-Gabin, the daughter of Jean Gabin. In 2007 she played Caroline in L'Heure zéro, Pascal Thomas's film adaptation of an Agatha Christie novel.

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