President Barack Obama and First Lady Michelle Obama pretend to sing with an a cappella group in the Diplomatic Reception Room of the White House during a holiday reception recently.

The First Lady looked radiant as always.

I’m sure you’re just as surprised as I am to see her wearing her first Marc Jacobs dress from the Fall 2010 collection.

She added customary kitten heels to her chocolate brown sheath dress which is decorated with paillettes down the front but it’s plain on the back.

Despite Marc Jacobs being one of ‘the’ American designers, I wouldn’t have thought Michelle wear his designs but she picked a lady-like piece that suits her sense of style.

Would she be so bold as to pick a look from the Spring 2011 collection?

Credit: Style.com & Official White House Photo by Samantha Appleton