8. Lady Gaga Is A Fan Of Jason Derulo! This image appears in the gallery:Jason Derulo: 20 Things You Didn't Know 8. 8. Lady Gaga Is A Fan Of Jason Derulo! The 'Born This Way' singer had the US star open for some of her shows on 'The Monster Ball' tour back in 2010. 20 images See the full gallery: Jason Derulo: 20 Things You Didn't Know