Paris Hilton appeared thinner than usual when she hosted the Rehab pool party

Feeling the strain? Paris Hilton appeared thinner than usual when she hosted the Rehab pool party at Hard Rock Hotel & Casino in Las Vegas this weekend


Slim pickings: The heiress split with her boyfriend Doug Reinhardt earlier this month but claims she is happy and enjoying single lifeParis Hilton


Party girls: Paris was joined by her sister Nicky at the pool party