Happy G.P.

Gwyneth Paltrow is returning to McKinley High tomorrow night, to help celebrate Glee’s 100th episode.

And the actress is bringing the “Happy” with her when she does.

Yes, G.P. is channeling the Pharrell within her for the special episode, which will feature Chace Crawford and past guest Kristin Chenoweth (pictured here with my girl Gwyn).

Click here to listen to her clap along, yo.

Photo: AllWord-News.co.uk.