From Esquire- Summer Tourists What To Wear in DC

How to Dress to Go to the White House from Esquire
Although it's known as "the people's house," you'll probably feel more welcome in something other than your "good" T-shirt.

For a tour: The White House is the people's house. It doesn't belong to the president and First Lady; it belongs to the people. But that doesn't mean that we don't have a sense of respect when we're there. Step it up a notch.

Nice casual: Trousers or khakis and a shirt (with sleeves). Sweater optional. No jacket necessary. Definitely no caps, flip-flops, or cutoffs.

To meet with a staff member: It's a conservative town. A business suit is very much what's worn in Washington.

Conservative business attire: Dark business suit with a shirt and tie. (Shirt doesn't have to be white.)

To attend a formal event: If you're invited to a social event, a state dinner, you will receive instructions on the invitation on what kind of attire is expected.

Business attire or black tie, depending on instructions.

Sheryl Eberly is a former White House aide to Nancy Reagan.