The 18-year-old, who was born and raised in Los Angeles, proves her career is booming.

Modelling all of the designs herself, of course, Sofia shows ex-boyfriend Justin Bieber what he's missing as she showcases her incredible figure in the new shoot.

Speaking to FEMAIL about the new party range, which lands online on October 31 and starts at £12, Sofia said: 'I’m so excited to be involved and fronting their campaign. It feels awesome that they chose me to be the face.'

Sofia, who cites her favourite Christmas party outfit as her sweats so she can relax, also revealed how her favourite celebrities and famous friends have influenced her style.

'Rihanna inspires me for sure,' she said. 'She marches to the beat of her own drum, which I like as I feel I do the same. My sister, Nicole, always said to be you and prom dresses 2016 for you.'

Sofia, who is best pals with Kendall and Kylie Jenner, has had a hugely successful year but says her 'pinch-me' moment was walking in Kanye West's fashion show.

'Walking in the Yeezy show was super cool. His mind is super creative,' she said of the rapper-turned-designer.

Clearly inspired by those around her, Sofia says she wants to continue doing more fashion campaigns, as well as develop her very own fashion range.

Despite her incredibly honed figure in the campaign shoot, Sofia says she isn't 'super strict' on herself when it comes to her diet. 'I try not to eat large portions of food for dinner and do SoulCycle. I love it. Wherever I am, I'm down to go get that work out. I feel refreshed after,' she said.

As well as focusing on helping launch PrettyLittleThing.com's new collection, Sofia has plenty of exciting things in the pipeline.

'I have a really cool cover coming out with Complex magazine soon that will probably get a lot of people talking and get them asking "how did I pull that off" and "wasn't she scared?". I can't say more, you will just have to wait and see...'

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