Real Housewives of Beverly Hills star Kim Richards has reportedly left rehab after just three weeks of treatment. The 47-year old checked into a facility early December after displaying “bizarre” behavior on her reality show. Kim began seeking substance abuse treatment for alcohol as well as prescription drug abuse. A source close to the star said, “Kim is going to be focusing on staying healthy and happy and just wants to spend time with her family. It’s really is one step at a time.” Kim’s sister, Kyle Richards, took to Twitter to offer encouragement: “Loved the time I got to spend w/ my sister @KimRichards11. I love u and am so proud of u. Xoxo.” The reality star plans to continue her treatment in outpatient therapy in Los Angeles.