Jennifer Nettles from Sugarland is now appearing in her striped pajamas, dancing in Sara Bareilles' music video for her new hit song 'Uncharted.' Known for her great sense of humor, at one point in the video, Nettles even hops on the bed for an impromptu jam session.

This is not the first time we've caught a glimpse of Jennifer's silly side. In Sugarland's video for their hit 'Stuck Like Glue' the country star is shown clowning around in a police line up, so it's not surprising she was chosen for this pop cameo. Josh Groban, Pharrell, Adam Levine from Maroon 5 and Ben Folds also appear in the clip.

Bareilles will also be one of the opening acts for Sugarland's 2011 'Incredible Machine' Tour, along with Little Big Town, Matt Nathanson and country newcomer Casey James, best known from last year's 'American Idol' contest. The tour will thrill fans in more than 60 different cities through October.

Watch Sugarland's Jennifer Nettles in Sara Bareilles' 'Uncharted' video