But when she's off-duty it seems the 38-year-old has a much more casual approach to fashion.
Back home in Australia for an extended Christmas break, Dannii wore a white vest and baseball cap.
Looking good: A casually dressed Dannii Minogue leaves a friends house in Melbourne with boyfriend Kris Smith
Gone were the high-maintenance hair dos and thick make-up, replaced by a relaxed style.
The star is showing toyboy boyfriend Kris Smith, 31, the sights.
The pair enjoyed lunch with her parents at the house of a family friend, before heading out for dinner at a local pub.
Keeping hydrated: Dannii sips water as Kris Smith drives their car
Day trip: The couple shielded their heads with baseball caps from the Aussie sun
Before her break Dannii told Heat magazine: 'This year has been full of happiness in so many ways.
'First of all my lovely man, Kris. He's been my rock and has given my life so much joy. Family is all well, and work is fun again.'
But it is not yet known if Dannii will reprise her role as a judge on the X Factor.
The former singer is still to be formally approached by Simon Cowell over her contract.
Dressed up: In the evening Dannii changed into a maxi dress for dinner
Quick spin: Dannii and Kris ate at a pub in St Kilda
Dannii admitted her upset at being constantly moved to the end of the judging panel on the live shows and swapping seats with Louis Walsh.
She told Heat magazine: ‘I still have no idea why I was told to change seats. I was told four different reasons by four different people, who all said it was the other person's decision.’
She added: ‘I like watching people play "pass the buck". I actually thought I might be judging from the side of the stage at one point.’
Out and about: Kris carries the bags as the pair hit the shops
