Florence and the Machine (stylized as Florence + the Machine) is an English indie rock band from London, England consisting of Florence Welch (born August 28, 1986), Isabella "Machine" Summers (born October 31, 1980) and a collaboration of artists who provide backing music (including Robert Ackroyd, Christopher Lloyd Hayden, Tom Monger, Mark Saunders and Rusty Bradshaw). They appeared on Saturday Night Live as a musical guest on November 20, 2010 where they performed "Dog Days Are Over" and "You Got the Love" and on November 19, 2011 where they performed "Shake It Out" and "No Light, No Light" with Florence Welch also appearing as Flow Diggity Flow Doubt in the "New Jack Thanksgiving" sketch and as the patron in the "The Blue Jean Committee" sketch.
Katy Perry as Florence Welch pn the December 10, 2011 episode.
Florence Welch was also impersonated by Katy Perry on the December 10, 2011 episode during the "Doggie Duty" sketch.