Guest Stars Emmy Rossum as Herself Miley Cyrus as Herself Kathy Griffin as Herself Scarlett Johansson as Herself Kesha as Herself Betty White as Herself Whitney Cummings as Herself Cesar Millan as Himself Paula Abdul as Herself Randy Jackson as Himself Wendie Malick as Herself Olivia Munn as Herself Zendaya as Herself Chelsea Handler as Herself Zachary Levi as Himself Ross Mathews as Himself Hilary Swank as Herself Ricky Gervais as Himself Linda Blair as Herself Andy Cohen as Himself Carrie Ann Inaba as Herself Brandon McMillan as Himself Sia as Herself Emmylou Harris as Herself Andra Day as Herself Stevie Wonder as Himself Dwight Yoakam as Himself