She was awarded the title by a panel of judges, which included George Clooney's ex, model and presenter Lisa Snowdon.
Lauren said: "I'd gone so long convinced I would be packing my bags, so to be told I'd won was a surreal moment.
"Now I just can't wait to start showing the modelling world what I'm made of."
Lisa Snowdon added: "Lauren epitomises a worthy winner. She never lost focus and always possessed that positive mentality you need to survive the industry.
"She's got a real sparkle about her, and that's proved to be her driving force."
Lauren follows in the footsteps of previous winners Lucy Ratcliffe and Lianna Fowler, winning a contract with agency Models 1.