Bruno Mars (Peter Hernandez) and his brother Eric Hernandez havethree sisters: Tiara, Tahiti, and Presley. Their adopted sister(cousin) is Jaime Kailani .Tiara Hernandez was born September 26, 1984.Tahiti Hernandez was born June 2, 1987.Presley Hernandez was born July 23, 1990.Jaime Kailani (Bayot) was born November 22, 1983.