The singer, formally known as Scary Spice, welcomed 5 lb., 4 oz. baby girl. She joins 8-year-old sister Phoenix Chi, Brown's daughter with ex-husband Jimmy Gulzar. in a Santa Monica, California hospital just after midnight (local time) this morning.
Brown's spokeswoman says, "The baby is completely healthy with a good head of hair. Mother and baby are now resting. No name has been decided on as yet, and she is purely known as Baby Brown."
Following the birth, Brown now faces a paternity battle with Murphy, who insists he isn't the tot's father.