Written by Sarah Iasiello, May 25, 2016

Kelly Osbourne — well the Osbourne’s in general — are no strangers to controversy, but this story is one low blow, literally!

On Monday, Kelly took a serious swipe at her father, Ozzy Osbourne’s alleged mistress amid the rocker’s split from her talk show host mother, Sharon.

The rumour mill went into overdrive recently, with claims that the 67-year-old Black Sabbath frontman’s been having it off with his hairstylist, Michelle Pugh, 22 years his junior.

The lilac-haired beauty decided to place herself in the centre of the controversy. Check out her tweet below!

If you thought that was some serious shade throwing, Kelly made matters worse by actually including her father’s alleged mistress’ phone number! Talk about adding fuel to the fire, Kel!

A source tells Us Weekly that this social media slaughter is the 31-year-old’s way of standing up for her mama, saying: “Kelly is trying to protect her family!”

However, we’re more curious as to how Sharon would handle Kelly’s outburst. The CBS host addressed her daughter’s Twitter tirade on The Talk Tuesday afternoon, where she gave her rebellious daughter permission to do whatever she pleases since she’s an adult.

Although, she did mention that Kelly is known for her wild sense of humor, so this could all just be a joke in her mind… or maybe a clever publicity stunt? Who knows!

Either way, get the popcorn out!

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