Gaga & Patti LaBelle Serenade Each Other With 'Over the Rainbow': Watch

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Monday night (June 7) was not only a big night for Lady Gaga because of the top style icon honor presented to her by the Council of Fashion Designers of America (CFDA) at the group's yearly awards. The after-party at NYC's Standard Hotel saw her called onstage -- and serenaded -- by Patti LaBelle on "Over the Rainbow."

What follows, though slightly incomprehensible from a lyrical point of view, is one of those memorable moments where celebrities seem like -- and appreciate -- one another as much as we do. Watch below, as both show off their impressive vocal runs, and LaBelle doesn't let Gaga's near-nakedness deter her from a loving embrace.

And keep watching for a bit of Gaga's head-banging action tacked onto the end of the duet. Is anyone surprised the Mother Monster is a Kiss fan?