According to Sarah Churchwell, Niagara was one of the most overtly sexual films of Monroe's career, and it included scenes in which her body was covered only by a sheet or a towel, considered shocking by contemporary audiences.
Menurut Sarah Churchwell, Niagara merupakan salah satu film paling seksual sepanjang karier Monroe, dan film tersebut menampilkan adegan-adegan dimana tubuhnya hanya ditutupi oleh selimut atau handuk, yang dianggap mengejutkan para audien pada masa itu.