Watch: Obama sings 'Purple Rain' to a little boy dressed as Prince
President Barack Obama sang "Purple Rain" to a little boy dressed as Prince for Halloween.
Gary Williams, Jr. posted a video to Instagram of the president singing to his nephew as he went trick-or-treating with thousands of other local kids at the White House Monday.
The little Prince's outfit was complete with a purple coat, a poet shirt, mustache and guitar. William's niece was dressed as a unicorn.
For more from the White House's Halloween festivities, check out the video below.