Bosom Buddies (1980)

Henry and Kip are two advertising designers who had a real problem with finding a place to live. At the beginning, the sole place they could afford was condemned, but they only found out when the wrecking ball was smashing up the place while they were sleeping. A female friend suggested they stay at her building, but the snag is that the place is for women only. In desperation, they assume the identities of the women Hildegard and Buffy in order to rent a room. Now as they pursue their dream of success in the ad business, they also struggle to keep their deception at the apartment building so they won't be evicted, but the beautiful neighbours they have are a constant temptation.