'Real Housewives of Beverly Hills' Star Taylor Armstrong -- Signs of Spousal Abuse?

TMZ has learned the stars of "The Real Housewives of Beverly Hills" were well aware of Taylor Armstrong's claims of spousal abuse ....long before her allegations went public.

Sources connected with the show tell us ... Taylor had showed her castmates bruising and other injuries, claiming her husband Russell was responsible.

According to sources connected with production, Taylor -- who filed for divorce from her husband Russell earlier this month -- was adamant about hiding what she has called a physically and emotionally abusive marriage.

And, sources say, Russell even got "aggressive" with Taylor at an event, and execs from Bravo witnessed it.

Taylor told People.com, her arguments with her husband often got physical -- with Russell grabbing her, shoving her, and pulling her hair.