Looking beautiful in blue, the "Don't Trust the B---- in Apartment 23" star headed into the Ed Sullivan Theater wearing a Z Spoke by Zac Posen Spring Summer 2012 ink blue silk jersey day dress while finishing off with Jimmy Choo sandals and H. Stern Jewelry.
During the interview, the 30-year old actress dished about how she was discovered by a modeling agency when she was 15-years-old.
Of this, Miss Ritter explained, "We're at the mall and I'm wearing like a big loser outfit, big jeans and Guns N' Roses tee shirt and my mom and I are fighting in public," adding, "Elite model management was there scouting models."
Also talking about how she moved from her small town to New York City and then Europe to model before starting her acting career, Krysten certainly seemed stoked about her sit down with Letterman, as she tweeted at the end of the appearance, "Just left Letterman!!! Omg what a life experience! Pinch me!"