The 39-year-old Aussie singer and partner Kris Smith welcomed son Ethan last year, and the X Factor judge said with the time demands of a new baby, she was forced to seriously rethink her beauty regime.
She told heatworld, 'Since becoming a mum I've had to pare down and simplify my approach to getting ready for days or nights out.
'When I race home from work I might think I'm going to have an hour to get ready, then suddenly Ethan throws up over my shoulder and it's, 'Ohhh, OK! Change of plan! I'll just put a scarf over this'.'
'When you're in a hurry tried and tested is the only way to go,' she explained.
'The secret is knowing your style, but being prepared to be flexible when the situation calls for it.
'After an 'Ethan incident' I've been known to whip off what I'm wearing, rinse off the offending (or should that be offended) area, dry it with a hairdryer and pop a scarf over the top. What do you mean my Pashmina doesn't go with my Versace couture?'