Storia fantasiosa cuckold Nr.2

You , your wife and her stepsister are going to a small sex party in a hotel room with other couples. . You have never had sex with her sister-in-law , she also never wears pantyhose but this time your wife gave her a pair of shiny pantyhose to wear and to make you horny. She allows you to have sex with her stepsister, but you only allowed to watch her fuck other couples