On Saturday nights X Factor show Dannii Minogue’s Ralph & Russo dress was a total disaster.

I only have 3 words for it TACKY, Tacky and tacky.

It looks like something a WAG like Alex Curran would wear.

Her dress was so dated and screams Euro trash, I was incredibly disappointed with her look.

Joan isn’t looking any better in this picture.

Dannii managed to redeem herself and do a complete 180 on Sunday’s show wearing an elegant Donna Karan Fall 2009 belted merlot jersey gown.

The turtle-neck gown hugged her curves and was more sophisticated than her previous look.

I think that Dannii should just stick to J’Aton Couture, as she was a knock-out when they were dressing her.

Everything else seems to pale in comparison.

Credit: Style.com, TwitPic & Rex Feature