ABC's hit show 'Nashville' is getting a double dose of stardom. Kellie Pickler and First Lady Michelle Obama are set to guest star on an upcoming episode of the television series.

The First Lady and 'American Idol' alum will guest star in an episode titled 'All or Nothing With Me.' They won't take on any surprising roles or exotic characters; instead, they will simply play themselves.

ABC has announced that the two will appear at a charity concert being organized for Luke Wheeler (played by actor Will Chase). His tour is being cut short after an injury in Afghanistan, and Rayna (played by Connie Britton) performs at the benefit after learning that Wheeler has been hurt while on duty.

Several country stars have showed up on 'Nashville.' Brad Paisley has appeared on the show, and Kip Moore and Vince Gill have also graced the show's set, playing themselves. In previous seasons many other country singers have played themselves as well.

The episode with Pickler and Michelle Obama airs on May 7.