Osbourne, who's an outspoken recovering addict herself, appeared Wednesday morning on the British TV show "Loose Women" to defend the "Sorry Not Sorry" singer, emphasizing she's been in the same situation.
"I know what it's like to have the whole world talking about you in your most vulnerable state," she says.
"Relapse is one of the hardest things we face as an open addict who has gone through the program and turned their life around," the 33-year-old adds. "People need to know rehab doesn't fix you, it just helps you to get yourself on the right track. You're never fixed."
Continuing to talk about her own addictions, Osbourne reveals that users who relapse go "straight to shame," and urges people to "show love and pray for her [Lovato], and know that it's okay."
As The Blast reported, Lovato refused to reveal the drugs she had taken to responding paramedics, but a nurse at the hospital told police she was doing some type of methamphetamine leading up to the medical emergency.