According to The Guardian, the divorce decision was handed down by the judge after just 68 seconds after the start of the hearing.
In documents filed in court, Appleton, 39, accused Gallagher, 41, of adultery, a fact that he reportedly admitted.
The British singer also declared in the divorce petition that the former Oasis frontman “now has a child” with the woman with whom he had cheated on her.
District Judge Anne Aitken considered that Appleton had “sufficiently proved” her claims and that she “is entitled to a decree of divorce, the marriage having irretrievably broken down, the facts found proved being the respondent’s adultery.”
Liam Gallagher and Nicole Appleton, who were married on Valentine’s Day in 2008, have a son together, Gene Appleton Gallagher, 12.