Sharon Osbourne has apologized for dissing Susan Boyle.

During an appearance on Sirius Radio’s Opie & Anthony last week, Osbourne, 57, slammed the Britain’s Got Talent runner-up, 48, for being hit by “the ugly stick.”

In September, Susan performed on America’s Got Talent — the show for which Sharon is a judge.

After her daughter Kelly was forced to defend herself against a Twitter user who took her to task over her mother’s SuBo slam, the Osbourne matriarch issued a public apology to the talent show sensation:

“Susan Boyle is a lovely gracious woman and I took advantage of that by poking fun at her. I would never want to be responsible for hurting Susan, and I must apologize for getting a cheap laugh at her expense,” Sharon wrote.

Susan Boyle’s debut album, I Dreamed A Dream, drops on Nov. 23

SEE ALSO:   Paris Hilton Kathy Griffin "My Life On The D-List" Photos