On Monday evening Michelle Obama made her first guest appearance on ‘Late Show with David Letterman.’

She looked lovely, as always, wearing a green, navy blue and green Preen Pre-Fall 2012 dress.

Her colour-block dress with a peplum and belted waist was accented with a sparkling Alexis Bittar Sapphire pin which followed the asymmetrical line on her dress.

On show, The First Lady explained how she creates a sense of values for her daughters while living in the White House, and her work on behalf of veterans.

Here are some extracts from her interview:

On late night conversations with President Obama: “He is always upbeat, particularly about Congress.”

On an undercover shopping trip to Target: “I thought I was undercover . . . no one knew that was me. Because a woman actually walked up to me. I was in the detergent aisle. She said, I kid you not, she said, ‘Excuse me, I just have to ask you something . . . can you reach on that shelf and hand me the detergent?’ I kid you not. And the only thing she said, ‘Well you didn’t have to make it look so easy.’ That was my interaction. She had no idea who I was.”

On the First Dog, Bo: “He is the smartest dog on the planet. He is my son. I have a two girls, and a boy . . . he’s a very sweet dog. I’m not being biased. He is really a good dog. He’s very well mannered, he’s very even tempered. He has a very busy schedule, appearances. I’m thinking about getting him an agent.”

On her childhood: “I think my childhood was wonderful. We had seven channels. We didn’t have 24 hour TV. The notion of a video game . . . remember they had Pong? Those two little slits and the ball that went back on forth. We played that for hours, that was like, woo! We went outside, we played in the yard, it was a big deal if you rode your bike around the block, and if you got to ride it through the alley, that was a cool thing. I think my childhood was much more simple than it is now for kids.”

On dinner time: “6:30 no matter what. We have dinner together as a family. That’s been the beauty of living in the White House because before this, Barack was in Washington, he was in Springfield, we would see each other on the weekends. And now we have dinner every night. And that’s when we really get to talk about things.”

Credit: Style.com & CBS