Out for a promotional appearance, Kate Walsh was spotted paying a visit to "The Late Show with David Letterman" yesterday (November 11).

The "Private Practice" actress looked fit and fine as she made her way inside the Ed Sullivan Theatre, sporting a one-shoulder blue dress with black heels.

And coming up tonight, Kate returns to the ABC airwaves for an all-new episode of her hit show titled "The Hard Part."

Per the show's official website, "Addison and Sam perform urgent field care when, while out hiking, they stumble across a couple trapped in their car after an accident."