Mum-of-two Gwyneth Paltrow dons a tiny skirt to show the youngsters how it is done in an upcoming episode of Glee.
Gwynnie plays supply teacher Holly Holliday, who is covering for an ill Mr Shuester.
In the trailer she can be seen dancing around in a short, grey skirt and leading the Glee gang in a rendition of Cee Lo Green's Forget You.
During the dancing Paltrow even shows the students a few 'robot' moves.
The actress follows in the footsteps of Britney Spears and Madonna who have both made cameo appearances on the show.