Soap Opera Star Rivals Lisa Rinna & Eileen Davidson — Bringing The Drama To 'RHOBH'

Soap star rivals Lisa Rinna and Eileen Davidson are already bringing the 90210 as they have begun filming for the upcoming season of the Real Housewives of Beverly Hills.

Rinna and Davidson have known each other for years because of their work on Days of Our Lives.

"There is absolutely no love lost between Lisa and Eileen. Eileen can be very cold and aloof towards other women, and Lisa doesn't like that at all. Lisa is very outgoing and says whatever is on her mind," a source exclusively told RadarOnline.com. "The ladies have already had some heated exchanges during the onset of filming."

"The ladies have already had some heated exchanges during the onset of filming."

Rinna takes issue with Davidson's decision to leave the popular soap opera, claiming to wanting to spend more time with her family, but ultimately deciding to join the cast of a reality show doesn't make sense to the actress.

"Eileen said she quit DOOL to spend more time with family, but then invites reality cameras into her house? There is a lot going on with Eileen's personal life, and just doesn't seem like the best decision to join a reality show," the insider added.

"This will be one of the best season's for RHOBH, ever."