Crystal catches Mia flirting with her husband and confronts her about it only to find Mia has been doing her man and the talk turns into a catfight.
Crystal and Mia are lingerie models at a photo shoot and get into a catfight over top billing at the photo shoot. The fight could take place on a bed/bedroom or on a big plush rug in front of a lit fireplace.
Crystal and Mia are biker bartenders and get into it at the bar (pool tables, seating area, bar counter, etc.) over one thinking the other is steeling tips or is flirting with the other's boyfriend.
Just a few ideas off the top of my head.