Chesney's publicist, Holly Gleason, however, says not to read too much into the sighting and that they have no plans to remarry.
"They're friends," Gleason said. "The media made so much more out of everything that the public has no clarity about any of it. And that's the tragedy. They're two nice people who don't choose to live in public."
Zellweger, 36, and Chesney, 37, wed in a small ceremony on the Caribbean island of St. John in the U.S. Virgin Islands last May. It was the first marriage for both of them, and it lasted about four months. The union was annulled by the Los Angeles Superior Court in December.