Reese Witherspoon & Jim Toth's Hot Date – Literally! – in Nashville
07/19/2011 AT 06:00 AM EDT
Reese Witherspoon and husband Jim Toth braved the 100-degree temperatures in Nashville for lunch on the patio at the San Antonio Taco Company. She was in a pink tank top and jean shorts and was "very casual," a source says of the actress, who was also very upbeat.