The feminine given name Laetitia has Latin origins and means happiness or joy, deriving from the Latin words 'laetus' meaning happy or joyful, and '-itia' denoting a state or quality. It was used as an adjective in ancient Rome and later adopted as a female given name in medieval Europe, popular among nobility. Today, it remains a classic choice with famous bearers including French singer Laeticia Hallyday and Belgian tennis player Justine Henin.