VH1 announced on Thursday it will air the iHeartRadio Music Festival, held in September in Las Vegas, on Wednesday and Thursday of Thanksgiving week.  The two and a half hour special includes a headlining set by Lady Gaga, plus performances by Coldplay, Kenny Chesney, The Black Eyed Peas, Steven Tyler, Jennifer Lopez, Carrie Underwood, David Guetta, Jane's Addiction, Nicki Minaj, and a one-of-a-kind collaboration from Sting and Jeff Beck.  The iHeartRadio concert will also air on VH1s sister network, Palladia, in December.  Check out a clip of Gaga performing "Poker Face" at iHeartRadio below.