Shelton, 39, filed his divorce documents nearly two weeks ago, and a judge signed off on the papers on Monday afternoon in Oklahoma, reported Us magazine.
It came hours after the country superstars, a staple in the music awards show circuit and beloved by countless fans, confirmed their split with a joint statement released by their representatives.
"This is not the future we envisioned. And it is with heavy hearts that we move forward separately. We are real people, with real lives, with real families, friends, and colleagues. Therefore, we kindly ask for privacy and compassion concerning this very personal matter," the statement read.
This was 31-year-old Lambert's first marriage.