The Twihard is so in love with the brooding celeb, she has booked a ceremony at the Viva Las Vegas chapel, Las Vegas for January.
There the 24-year-old art student will 'wed' his alter-ego, Edward Cullen.
© Rex Features
She originally bought her 'groom' from a record shop for £15 but this was a lot cheaper than the wedding itself, which is costing her a staggering £2,000.
"It's a beautiful escapist fantasy and I'm living it," Lauren said. "I've also got the invitations sorted, and even have a beach honeymoon planned for me and my vampire hubby.
"I'm going through all the steps a normal bride does. It's absolutely real."
But word of her unusual wedding is getting around her home town of Tennessee.
"A few of my ex-boyfriends found out and they're surprised I'm taking things this far, but they've always known I'm a massive romantic."
The only difference between her and other brides is the fact she didn't have a proposal.
"I didn't ask him to marry me out loud, I didn't have to,' she said. 'And I knew by his silence he'd said yes."
Read more: Essex girls are the easiest to date in England
Read more: What an idiot! Alternative punishment for bad driver
