President Barack Obama was also on hand as the duo welcomed local schoolchildren and children of military families to trick-or-treat.
Later on, the Obamas addressed their 4,000 guests.
“We hope parents, on this day at least, don’t have to pay attention to Michelle and healthy eating,” said Obama. “And in fact, the more candy, the later you eat the candy, the better.” The first lady chimed in, saying, “Candy for everyone.”
Michael Jackson’s “Thriller” started playing, which then prompted the Obamas to start dancing and singing for the crowd.
Last year, the Obamas held the annual Halloween event with the first lady opting for a more casual look. She was spotted in jeans and a pair of sequin Converse sneakers.
Watch the video below to see the Obamas dancing to “Thriller.”