Gwyneth Paltrow, Cee-Lo Green

Gwyneth Paltrow and Cee Lo Green are taking their act to music's biggest night: the Grammy Awards.

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The Oscar winner will perform with Green at the Feb. 13 show alongside the Muppets, CBS announced Wednesday. It is not known what they will sing.

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This marks the third collaboration between the two in the past month. Following Paltrow's sanitized spin on Green's hit "F--- You" on Glee in the fall, they recorded a new version of the song and appeared on Saturday Night Live together.

Other Grammy performers include Eminem, Arcarde Fire, Lady Gaga, Katy Perry, and Drake and Rihanna, who will perform together. 

The Grammys will air Feb. 13 at 8/7c on CBS.