The reality star blew everyone away with her spray on PVC catsuit that boasted a booby bustier and slashed trousers, but it was her beauty look - especially those glitter-splashed, ombre lips - that really stole the show, and amazingly her talented make-up artist has let us in on how she created 'em.
Olivia looked to none other than MUA Anna Lingis to make her over for the star studded bash and if the name sounds familiar, it's because she was also the mastermind behind Danielle Armstrong's totally creepy ventriloquist's doll look!
To dress Olive's lips, Anna grabbed the Queen Esoteric liquid lipstick in Chelsea's Galaxy, £15 and applied this all over. Liquid lipsticks are always highly pigmented, but if you're spending hours out on the town, give your smackers a second swipe.
Allow the liquid lipstick to dry completely and then pop a little Vaseline or clear gloss in the centre - this'll help the glitter stick. The product Anna used? Eunique Beauty's glitter eyeshadow in Ruby, £4.80 obviously!
For the next step, don't be afraid to get messy! Dip your finger in to the glitter pot and use the soft pad to dab on to the centre of your lips. Leave the corners free of glitter for that cool ombre effect - et voila, Halloween-inspired lips in next to no time.
She made the biggest splash at the KISS bash, and earlier in the week, Olivia - who just moved into a new home with Alex - took us behind the scenes on her first ever shoot with Quiz clothing since announcing a collaboration with the brand (live on our Facebook, FYI!).
The star gave us a glimpse of the amazing bits and pieces set to land in store and online very soon. Watch this space!
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