24/09/2011 09:58 BST | Updated 22/05/2015 10:12 BST

Quick Change: Fergie Goes From Demure To Diva In Las Vegas

Fergie pulled off a superstar Jekyll and Hyde last night at the iHeartRadio festival at Las Vegas' MGM Grand Hotel.

The singer arrived at the event looking all classy and chic in this black leather pencil skirt, ribbed canary yellow turtleneck jumper (yes, we know that's a lot of animal references for one item of clothing), and velvety toe-peepers, before pulling an old switcheroo for her performance with bandmates, the Black Eyed Peas.

aol, mydaily, fergie, black eyed peas, kate mcauley Fergie on the read carpet at the iHeartRadio festival in Las Vegas. Photo: PA

Her stage costume was a tangle of sequins, fish-netting, shoulder pads, and studs. And, while we know it's oh-so-right-now to mix your prints, we're not sure the celestial jacket should have been paired with over-the-knee camouflage boots. We are, however, digging her attitude.

aol, mydaily, fergie, black eyed peas, kate mcauley Fergie takes to the stage. Photo: Getty Images for Clear Channel

Which look do you prefer? Colour blocking with class or sassy clashing prints? Let us know by leaving a comment below.