Troubled British pop star Robbie Williams has checked out of rehab after completing a 21-day stay at a US clinic to overcome his addiction to prescription pills. The FEEL hitmaker - whose latest problems come after years of battling alcohol and drug addictions - was admitted to The Meadows rehabilitation centre in Arizona last month (FEB07) and left the facility last night (06MAR07). After finishing his stint in rehab, Williams is now resting at his home in Los Angeles. The 33-year-old's spokeswoman BRYONY WATTS says, "Robbie has completed treatment in Arizona and continues with an after-care programme."