The 20-year-old singer - who is engaged to Australian actor Liam Hemsworth - accidentally revealed she has been crowned the magazine's sexiest woman of the year via her Twitter page on Saturday morning (04.05.13) before the publication could officially announce the results later this month.
She tweeted: "Didn't know this was coming out yet! I'm so happy to be #1 on Maxims HOT 100! #myfanskickass #dreamsdocometrue"
She also posted an exclusive picture of herself from the magazine's upcoming steamy spread, in which she is laying seductively on a beach in a gold swimsuit.
She shared the same image on her new Instagram profile, saying: "My 1st Instagram is dedicated to all my fans thank you for crowning me #1 Maxim Hot 100."
The annual Maxim party celebrating the special issue dedicated to the 100 most beautiful women of the year is set to take place on May 15 in Hollywood.
Miley recently claimed she was no longer interested in stripping down for photo-shoots.
She told Elle magazine: "A star is someone who doesn't have to take her clothes off to be sexy because you naturally have star power. Sex does sell, but you have to find a way that's not just showing your tits. I don't want to be a glorified model. They just walk on stage and it's all about their clothes -- or lack of clothes."
Maxim has yet to comment on Miley's claims.
Israeli model Bar Refaeli topped the magazine's annual list ahead of 'The Newsroom' star Olivia Munn last year.
- BANG! Showbiz