'Good Morning America' Halloween 2011: George Stephanopoulos as Lady Gaga, ABC Team Plays Rockstars (VIDEO, SLIDESHOW)

PHOTOS: George Stephanopoulos As Lady Gaga

George Stephanopolous and the "Good Morning America" gang brought it on Monday when the show threw quite the Halloween rocker-themed bash.

"GMA's" pop-star party included the industry's finest - including Robin Roberts as a spot-on Nicki Minaj, Bianna Golodryga as a hip-shaking Beyonce, Lara Spencer as a fierce Lady Gaga, and none other than George Stephanopoulos as Gaga's alter ego Joe Calderone.

Stephanopoulos was committed to his character and even took a sip of what appeared to be a real shot of whiskey, much to his dismay (he appeared less than enthused with the beverage's taste).

The "GMA" hosts looked to be having a grand old time shaking their tail feathers and rocking it out on the air. What did you think of their rocker-chic meets rocker-eek Halloween bash? View our slideshow, watch the video and weigh in on the costumes below! (All photos courtesy of ABC.)

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