Actress Lisa Rinna ("Days of Our Lives," "Melrose Place") may be joining the season-five cast of Bravo's "The Real Housewives of Beverly Hills," Us Weekly said Monday.

The magazine said Rinna, who turned 51 on July 11, filmed her birthday party for the show at cast-member Lisa Vanderpump's third Los Angeles restaurant, Pump, in West Hollywood. Rinna, a season-two contestant on "Dancing With the Stars," starred with her actor-husband, Harry Hamlin, 62, on the 2010 TV Land reality show "Harry Loves Lisa."