31/05/2012 06:42 BST

Kylie Minogue: 'Simon Cowell's Fling Revelations Were A Blow For Dannii'

Kylie Minogue has revealed that sister Dannii has been left hurt and upset after Simon Cowell revealed he'd had a fling with his former X Factor colleague.

The affair was made public in the TV and music mogul's biography just weeks after Dannii split from partner Kris Smith.

kylie minogue

Kylie told Glamour magazine: "It was a bit of a second blow after 'Oh, my relationship has broken down'."

And it doesn't sound like Kylie has much time for Mr Cowell since the revelations came to light, saying: "Well, he doesn't need to do any of those things. Or maybe he does? Who knows? I don't know the guy."

kylie dannii

But despite having a hard time at the moment, the singer said her younger sis was coping well.

"We just have normal sister chats when we can," she said. "And that's all you need to know - that your sister's there.

"If she called me and said, 'I'm really flipping out, I need to see you,' I'd be on a plane tonight.

"But Dannii is tough... Dannii will be alright. Of course she'll be all right."

simon cowell dannii minogue

Despite the beef with her former boss, Gary Barlow has dropped the biggest hint yet that Dannii is STILL in the running to replace Kelly Rowland on The X Factor.

Dannii reportedly turned down the offer to return to the ITV show after show bosses failed to agree on her pay, but the Take That star has hinted that the fourth judge's seat IS being kept warm for the Aussie star.

"Well you never know," he told Metro. "You never know. We've had a few hints but we're not completely sure. I think we're gonna know any day."

Come on Simon - you owe it to Dannii.