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.” Read more…