Kitt began her career as a member of the Katherine Dunham Company in 1943 and remained a member of the troupe until 1948. A talented singer with a distinctive voice, she recorded the hits "Let's Do It"; "Champagne Taste"; "C'est si bon" (which Stan Freberg famously burlesqued); "Just an Old Fashioned Girl"; "Monotonous"; "Je cherche un homme"; "Love for Sale"; "I'd Rather Be Burned as a Witch"; "Uskudar'a Gideriken (aka Katibim)"; "Mink, Schmink"; "Under the Bridges of Paris"; and her most recognizable hit, "Santa Baby", which was released in 1953. Kitt's unique style was enhanced as she became fluent in the French language during her years performing in Europe. Her English-speaking performances always seemed to be enriched by a soft French feel. She spoke four languages and sang in seven, which she effortlessly demonstrated in many of the live recordings of her cabaret performances.
Kitt became a vocal advocate for homosexual rights and publicly supported same-sex marriage, which she believed to be a civil right. She had been quoted as saying, "I support it [gay marriage] because we're asking for the same thing. If I have a partner and something happens to me, I want that partner to enjoy the benefits of what we have reaped together. It's a civil-rights thing, isn't it?" Kitt famously appeared at many GLBT fundraisers, including a mega event in Baltimore, Maryland, with George Burns and Jimmy James. Scott Sherman, an agent at Atlantic Entertainment Group, stated "Eartha Kitt is fantastic... appears at so many GLBT events in support of civil rights."