Kelly Osbourne has checked into an unnamed rehab center in the Los Angeles area for a 30-day stay, People reports. Last night, Osbourne’s mother Sharon was quoted on RadarOnline.comas saying, “Yeah, Kelly’s in rehab. What else can we say? She knew thatit was the right thing to do at this point and we’re proud that she didit. The family is all standing behind her. Kelly knew that she neededhelp and she’s getting it.”Earlier this week, People reported that Ozzy Osbourne’s daughter was arrested for allegedly slapping a journalist at a London nightclub, and five years ago the singer-reality TV star checked into a rehab center to treat an addiction to painkillers.