Kim Richards Steps Out with Kathy Hilton Post-Rehab
01/12/2012 AT 03:30 PM EST
It was the first public outing for Richards, 47, since she left rehab earlier in the week.
The Real Housewives of Beverly Hills star was seen smiling as she and her older sister, 52, exited the restaurant, looking happy and healthy after completing a 30-day program for treatment of alcohol abuse and other issues.
Richards's Real Housewives costars recently filmed a reunion special, according to Bravo executive and on-air personality Andy Cohen, but Bravo wouldn't confirm whether or not Richards participated.
Cohen described the reunion as "high drama," following a turbulent season that was marked by Kim's often erratic behavior – which played out dramatically on the show during a recent trip to Hawaii.