This is simple: WI Marilyn Monroe lived to 1997? The specific POD doesn't matter much as long as it doesn't radically alter society's trajectory as a whole.
How would the rising tide of sexual liberalisation in the late 1960s and 1970s have affected her status as a sex goddess and the trajectory of her career? OTL Marilyn's "sexiness" was in relation to a far more conservative society than existed even a few years after her death. Would she have felt pressured to do porn, or at least nude scenes, to keep up her image? Would she have been OK with that, or was she too "old-fashioned"? Of course, by 1967 she would've been 40 years old, maybe considered "past her prime", so vanity may also be an issue. (It is rumoured that in OTL she killed herself out of fear of losing the public's attention as she grew older.)
How would the rising tide of sexual liberalisation in the late 1960s and 1970s have affected her status as a sex goddess and the trajectory of her career? OTL Marilyn's "sexiness" was in relation to a far more conservative society than existed even a few years after her death. Would she have felt pressured to do porn, or at least nude scenes, to keep up her image? Would she have been OK with that, or was she too "old-fashioned"? Of course, by 1967 she would've been 40 years old, maybe considered "past her prime", so vanity may also be an issue. (It is rumoured that in OTL she killed herself out of fear of losing the public's attention as she grew older.)