Lisa Rinna is set to join the core cast of Bravo's Real Housewives of Beverly Hills. The Days of Our Lives alum has even already filmed some scenes for the hit reality series, multiple sources confirm to Us Weekly.

The actress, 51, recently filmed her birthday party on July 11 for the show at Lisa Vanderpump's newest restaurant Pump in West Hollywood, Calif.

"Lisa has been friends with Kyle Richards and Lisa Vanderpump for years," the source explains. Rinna, married to actor Harry Hamlin for 17 years (together they share kids Delilah Belle and Amelia Gray), will be in good company during her debut season of the Bravo show: show vet Kyle Richards told Us in June, she's 100% returning for season 5.

"Yes, it’s coming back and I’m coming back," Richards exclusively told Us, "I feel good. I’m looking forward to a new season. I think it’s going to be a really good season and I’m excited. I’m curious, like the viewer, to see things unfold and see what the relationships are like." The 45-year-old fan favorite of the series added her sister, Kim Richards, is also set to return.

Two ladies Rinna won't get the chance to mingle with are last season's newbies Joyce Giraud and Carlton Gebbia; the two were fired after only one season. Series regulars Brandi Glanville and Yolanda Foster's fates have yet to be announced.

Tell Us: Are you excited for Lisa Rinna to join RHOBH?