Kelly Osbourne has shared that she's relapsed after four years of sobriety.
The TV personality quit drinking alcohol and taking drugs in 2017 and focused on rehabilitation with help from her family, including brother Jack who celebrated 17 years of sobriety last year.
She shared the news with her Instagram followers in a series of candid videos to her Stories.
Osbourne, 36, said: "Hey guys, so this is a little hard for me to talk about but I've always promised you that I'd always be honest with you about where I'm at and what's going on with my road to recovery.
"I relapsed. I'm not proud of it but I am back on track and I will be doing a podcast this week where I tell everyone about what's going on and what happened.
"I just want to let you know that I am sober today and I'm going to be sober tomorrow but I've learnt it truly is just one day at a time and I just wanted to tell you guys the truth because I never ever want to lie to you.
Watch: Kelly Osbourne promises "inclusivity" in podcast
"Thank you so much for your support and your love and you'll be hearing from me soon."
In an interview on DJ Fat Tony's podcast The Recovery last year, Osbourne told the host that before she went into recovery she was "in a haze of hangovers and withdrawals".
“I was so wasted the whole time," she shared. “I hadn’t been to a grocery store in three years or done normal things. I thought, ‘I don’t want to live like this any more’."
She reached out to her younger brother for help, who immediately came to his sister's aid.
Osbourne previously broached the subject of relapsing following Demi Lovato's near-fatal overdose in 2018.
Speaking on an episode of Loose Women, she remarked: "Relapse is one of the hardest things we face as an open addict who has gone through the programme and turned their life around.
“People need to know rehab doesn’t fix you, it just helps you to get yourself on the right track. You’re never fixed. You spend your whole, entire life doing everything you can to never pick up and use again."
Osbourne's father Ozzy has also had a well documented battle with addiction, but is now around seven years sober himself.
Watch: Sharon Osbourne planning book after The Talk exit