Mrs O looked très elegant in the v-neck column dress with bead and sequin embellishment. The advent of summer also meant that those famously toned arms were very much on show.
This isn't the first time Michelle has wowed in a Naeem Khan creation - the designer was also responsible for that fabulous strapless gold dress and shawl she wore to the state dinner for the Indian prime minister in 2009.
What do you think of the First Lady's look?
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