Gleeks were treated to Gwynnie's all-singing, all-dancing performance of the Cee Lo Green hit, along with a medley of Singin In The Rain and Umbrella.
The wow-worthy performance has made its mark on the UK music charts as Roger Greensmith, Music and MP3 manager at Amazon.co.uk explained: 'Gwyneth’s tracks, along with others from the show, have seen Glee occupy 15 of the top 20 places on the Amazon.co.uk MP3 Movers and Shakers chart since Monday night’s episode.'
Gywneth's huge success on Glee has lead to a sparkling new musical career in the States with a performance with Cee Lo himself at the 2011 Grammys and a spot at the ultra glam Oscars this weekend.
And while Gwynnie's musical career takes off, the US will see her reprise her role on Glee over the next few weeks, and there's talk of a possible romance between her character and Mr Schue.
Also singing in movie Country Strong co-starring Leighton Meester, and with plenty of connections in music - hubby Coldplay's Chris Martin and best friend Beyonce - could this be the start of Gwyneth's new venture into the music industry? Watch this space!
WATCH GWYNETH AND LEIGHTON SING IN COUNTRY STRONG
By Tara Gardner