You don't have to be a Hollywood hotshot to have a run-in with the law! Rumer Willis was partying at La Quinta hotel in Aberdeen, Md. when police response to a noise complaint in her room. When the cops arrived, they found Rumer and three friends and arrested one for alleged marijuana possession, Access Hollywood reports. (The Bruce Willis/Demi Moore spawn is in Maryland filming indie flick, From Within.) However, Rumer was neither arrested nor under investigation, authorities say. But you know what they say -- you are who you hang with!