Party Girls (1989)

Marilyn Saunders finds herself in dire financial difficulties. To remedy the situation, she and her friends form a company providing "Party Girls" to those requiring the services of scantily-clad women. Marilyn's male partner is madly in love with her, but she only has eyes for a rich investor. The party girls work at playing matchmaker, while an apartment full of guys and a slumber party full of women watch the events unfold on video, just as we do, in an interesting bit of meta-fiction.