The teen sensation served old Hollywood vibes in this Alexandre Vauthier haute couture gown, which was embroidered with tens of thousands of silver sequins.
And if the 1920s-inspired frock didn't steal the show enough, Olivia added Stefere jewellery and Giuseppe Zanotti wedges as she picked up the Brit Award for Best International Song.
At Billboard’s annual Women in Music Awards in early March, Olivia combined edginess and elegance in this $1300 maxi dress by Area.
Olivia and her stylists Chloe and Chenelle Delgadillo gave a nod to '90s grunge by adding three leather belts, embellished straps and towering lace-up platform boots by God Can't Destroy Streetwear.
The LA Rams may have been victorious at the Superbowl this year, but it was Olivia who really won in the fashion department. After weeks of glitzy red carpet events and performances, Olivia finally gave us an outfit we can easily emulate.
She rocked this printed singlet top, leather pants and heavy chain jewellery. To feminise the look, the 19-year-old added a bold red lip and pigtails... we smell a braids comeback!
Olivia opted to keep her platform boots on to attend the Billboard Awards afterparty, and we don't blame her! The Good 4 U hitmaker stunned in this webbed, knitted black dress as she stepped out with a friend.
Olivia may have only been a toddler at the height of Y2K fashion, but for her 19th birthday celebrations, she embraced a comeback of early-noughties dressing.
Giving us serious Mean Girls nostalgia, the silky ensemble included a black-lace-trimmed camisole, pink mesh sleeves, and a matching midi skirt that read "Eat Me Please, I'm So Delicious."
Olivia appeared to take inspiration from the sought-after wardrobes of our favourite Euphoria characters in this insanely enviable ensemble.
With platform Mary Janes, a camo mini skirt, white bandeau and cropped sweater, she's ready for a cameo at East Highland High School.