Just days after news emerged that Kelly Osbourne had been arrested in London earlier this month for allegedly slapping a British gossip columnist in August 2008, the singer/DJ's mother confirmed that Kelly has checked into a rehab facility.

Osbourne, 24, who has been in rehab twice before after struggling with an addiction to pills, has checked into an undisclosed center outside of Los Angeles for 30 days, according to People magazine. "Kelly Osbourne has voluntarily entered a medical facility to address some personal issues. Her family stands by and supports her," said a statement from her London representative.

On Thursday, RadarOnline.com quoted mother Sharon Osbourne as saying, "Yeah, Kelly's in rehab. What else can we say? She knew that it was the right thing to do at this point, and we're proud that she did it. The family is all standing behind her. Kelly knew that she needed help and she's getting it. ... We just pray that everything's going to be okay."

Sharon would not confirm what Kelly is getting help for. "Kelly will tell you herself when she gets out," she said. Right up until entering rehab, Kelly had been working with Sharon, brother Jack and dad Ozzy on the new Fox variety show called "Osbournes Reloaded."

"This is one of the absolute worst things a parent can face, for their child to go through rehab," Sharon told Radar. "And not once, but twice. However, we are all very glad Kelly's doing it."

Almost five years ago, in the midst of the family's brush with worldwide fame thanks to their MTV reality series, "The Osbournes," Kelly checked into a rehab facility to deal with an addiction to painkillers; she checked into another facility a year later.