David Letterman Ties the Knot

David Letterman and his longtime girlfriend, Regina Lasko, have gotten hitched, Usmagazine.com has learned.

The CBS Late Show host and Lasko tied the knot Thursday evening, a source tells Us.

The two -- who began dating more than 10 years ago when Lasko worked for him on his show -- welcomed son Harry in November 2003.

In 2007, Letterman told Oprah Winfrey that his son Harry has made a "huge difference" in his life -- but the boy doesn't always get his daddy's sense of humor.

Said Letterman, "Mommy has to tell him a lot that I'm just teasing."

Letterman was previously married for seven years to his college sweetheart Michelle Cook.

Source: omg.yahoo.com