Katy Perry with singer Ferras at the 2015 Grammy Awards flashing the Devil’s Horns.
Nicki Minaj doing a double V Sign. The sign is also known as the Sign of the Pan, the Horned God. See Minaj’s performance at the 2012 Grammy Awards:
FAKE – Rihanna does/did not have a tattoo of Weishaupt on her shoulder, temporary or otherwise. This photo was doctored from Rihanna’s performance at the 2010 Grammy Awards. (see video below)