The Miss Bumbum Brazil contestants have the most awesome way to celebrate reaching one million votes in the competition -- they've released a lingerie photoshoot to say thanks.

Online voting will determine 15 finalists from the 27 chicks vying for this year's title ... and the finalists will duke it out in Sao Paulo in November.



This year's contestants include a Megan Fox look-alike, a pair of twins, and a 39-year-old woman, who is apparently the oldest contestant they've ever had.