"For the past three years, I've thought about what to have done," the reality star tells PEOPLE. "I'm beyond obsessed."
And so, on Nov. 20, Montag's total transformation began. Keeping even her family in the dark, the starlet chronicled every painful moment of recovery and her journey to become "the best me."
To find out what surgeries Heidi underwent and what husband Spencer Pratt thinks of her new look, pick up the latest issue of PEOPLE, on newsstands Friday.