Imagine this: Penny Parker, a curvy dime-store cashier, longs for a best girlfriend. When she wins a contest, she gets one: Marilyn Monroe. She'll be the on-set assistant to the iconic star for eight precious days during the filming of Some Like It Hot in 1958.Penny's black-and-white life turns Technicolor as she becomes part of Marilyn's world of smoldering secrets, sinister strangers and jaw-dropping bombshells.The emotional whirlwind uncovers Penny's confusing attraction to childhood buddy, Frankie Holland. And in what could be a happily ever after moment, Hollywood's smartest dumb blonde steps in to play fairy godmother to her newfound-and unlikely-Cinderella.