X Factor judge Dannii Minogue has admitted that she was disappointed by Whitney Houston’s comeback performance, on the show last week.

Even though the audience gave Whitney a standing ovation at the end of her song, Dannii wasn’t impressed at all.

“It is beyond crazy,” she told The News Of The World.

“The first Google alert I had the morning after was: ‘Houston! We Have A Problem! Her dress came undone and she was kind of tripping over it. And to be honest her voice just isn’t what it was.”

Dannii also questioned Whitney’s behaviour when she was interviewed by Dermot O’Leary.

She laughed: “So Dermot says, ‘Whitney how are you feeling? Obviously you’ve been mentoring the 11 acts this week, how do you feel about that?’

“Then there was this huge pause and she looked down at her feet and she’s kind of fumbling around. She’s like, ‘ah, hang on, let me get this right, I don’t want to muck this up here.’”