America's First Lady Michelle Obama will have a guest role in the finale episode of the sixth season of the hit US sitcom, Parks and Recreation.

US President Barack Obama's wife will make a cameo appearance in the hugely popular comedy, which stars Amy Poehler and centres on a group of small town government workers in the Parks and Recreation Department in Indiana.

The First Lady has already filmed her scenes in Miami, Florida, but her storyline is being kept under wraps. 

The week Poehler was a special guest at Obama's Let's Move event in Miami, adding some star power to the initiative which encourages American children to live healthier lifestyles.

This isn't the first time a Washington, D.C. politician has made a cameo on the show - Vice President Joe Biden, Arizona Senator John MCCain, California Senator Barbara Boxer and former Maine Senator Olympia Snowe have all appeared in past episodes.