Simplify the following text for a Grade 6 native English-speaking person.
Original: Olive Marie Osmond ( born October 13 , 1959 ) is an American actress , singer , doll designer , and a member of the show business family The Osmonds .
Simplified: Olive Marie Osmond , known simply as Marie Osmond , was born October 13 , 1959 . She is a singer , actress and doll designer .