Bobby Brown -- My Baby's Got Musical Ambition ... Say Hi to Hendrix! (DOCUMENT)

Bobby Brown must be a HUGE Jimi Hendrix fan. According to the birth certificate obtained by TMZ ... Bobby's 7th kiddo is Hendrix Estelle Sheba Brown. She was born July 21st at 10:54 AM at Cedars-Sinai Medical Center in L.A. Robert Barisford Brown…