Simplify the following text for a Grade 7 native English-speaking person.
Original: Marilyn Monroe ( pronounced or ; June 1 , 1926 - August 5 , 1962 ) , born Norma Jeane Mortenson , but baptized Norma Jeane Baker , was an American actress , singer and model .
Simplified: Marilyn Monroe ( 1 June 1926 â `` 5 August 1962 ) was an American actress , singer , and model .