United Kingdom, May 1 -- Ariana Grande, Cynthia Erivo, Chappell Roan and Sarah Michelle Gellar will be guest judges on 'RuPaul's Drag Race All Stars' season 10.

The 'Wicked' stars , the 'Pink Pony Club' hitmaker and the 'Buffy the Vampire Slayer' actress are among the famous faces taking seats on the panel in the upcoming series alongside regular judges Michelle Visage, Ross Matthews, Carson Kressley, Ts Madison, Jamal Sims and Law Roach.

In addition, 'Sing Sing' actor Colman Domingo, 'Jolt' star Kate Beckinsale, 'Hairspray' director Adam Shankman, 'Lopez Vs Lopez' star Mayan Lopez, 'Blackpot' actress Devery Jacobs and Swiss event promoter Susanne Bartsch will also be casting their eyes over the 18 contestants.

Grammy-nominated rapper ...