Perez Hilton published photos of Kelly Osbourne's night out, alongside a story stating: "Oh girl, what are you doing?? Didn't you just go to rehab not that long ago? Again! Since you, like Lindsay Lohan, have an addictive personality, we'd advise BOTH of you to abstain from all substances - pills, alcohol, weed, heavy drugs, etc."
The reality TV star took offence at the article, and used her Twitter.com page to explain her actions to the blogger.
In a series of public messages sent to Perez Hilton, she writes, "I'm a 26 year old adult women (sic) a corona and a shot hardly constitutes rehab. I was out having fun with my friends!
"I am fully allowed to have the odd drink with my friends... good lord crime of the century!"
But Kelly Osbourne soon got over the comments, later adding: "Thank you for caring though you know I love you I will call you later."
Kelly Osbourne has previously fought painkiller addiction but successfully conquered her demons in 2009 following several stints in rehab.