has taken aim at tax collectors at the Internal Revenue Service in the U.S. after they hit her with another big bill last week (ends April 29). While the rock matriarch was in London covering the royal wedding for U.S. TV show "The Insider", she was served another huge tax lien - but she insists the latest IRS order for cash is a "procedural error".
In a tweet sent out over the weekend, Osbourne wrote, "Just when we thought it was safe with the IRS, here they come again! This time their fault, not mine. Not taking this one laying down." In another, she added, "Mine was a f**k up, yours was a PROCEDURAL ERROR. The bill has been paid, in fact I'm owed a rebate. Please send. Big Kiss, Mrs O."