Nikka Costa (b. 1972), is an American singer whose music combines elements of funk, soul, and blues, among other genres.

Born Domenica Costa on 4thJune 1972, she is relatively unknown in the United States, although she has achieved impressive commercial success overseas, most notably in Australia and Germany. She is the daughter of Don Costa, an arranger and producer of pop music, with whom she recorded several albums as a child, many of which have gone platinum. Frank Sinatra, a close friend of her father's, was her godfather. She is married to her songwriting partner and producer Justin Stanley.

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