I agree, Sydney is an attractive young lady but hardly a head turner.
But that won’t be the reason this movie flips.
This is a much more permissive society than it was back in the sixties and seeing a semi nude woman is ho-hum and not as risque as when Fonda tantalized the male audience back then
Plus there’s plenty of nude pics of her from that TV series she does.
This will be a dud.
Unless it is fun.