WATCH: Jennifer Hudson Belts Out 'Dreamgirls' Power Ballad At London Club

Jennifer Hudson showed the world’s fiercest drag queens how it’s done on Saturday night with a  performance of “And I Am Telling You I’m Not Going” at a London nightclub.

JHud slayed at G-A-Y with the power ballad her character Effie White belted out in the 2006 film Dreamgirls, for which she earned an Oscar as Best Supporting Actress.

Hudson, 35, is in London to appear as a coach on The Voice UK.

G-A-Y has hosted live shows by some of the biggest names in music, including Miley Cyrus, Lady Gaga, Enrique Iglesias, Kelly Clarkson, One Direction and Madonna.

Watch the performance by Hudson that sent the crowd into a frenzy below: