President Barack Obama and Michelle Obama hosted a dinner for the Queen at Winfield House, the residence of the Ambassador of the United States of America, in Regent’s Park this evening dressed in their finest eveningwear after a long day of visits, politics, hand-shaking, motivational speaking and meetings.

Michelle looked stunning wearing a Ralph Lauren Fall 2011 elegant black gown with a portrait neckline.

The black satin wrap around bodice is met by a long black crepe skirt.

Not many people can out bling the Queen, but Mrs O does wearing a breath-taking necklace with a matching bracelet and an emerald ring.

I prefer this Ralph Lauren gown to the Tom Ford gown as it more dramatic and sophisticated.

Which do you prefer?

Credit: Style.com & Getty