Reese and Ryan Reunite For an Hour

6/27/2007 2:08 PM PDT

Reese and Ryan Reunite -- for an Hour

It was a hot day in Santa Monica, but you'd never know it from the big chill between exes Reese Witherspoon and Ryan Phillippe. Legally un-fond!

The formerly inseparable twosome kept their distance while leaving a talent show at three-year-old son Deacon's school with daughter Ava. Future celebuspawn in training!

It's not tough for Ryan to look sexy -- even in a sloppy jacket, beltless pants and skeezy tank top, while Reese looks breezily unaware of his existence. The exiting exes arrived separately, and a TMZ source says they didn't interact much at the event.