While there were rumours not so long ago that Katy Perry and Taylor Swift had put an end to their long-running feud, that doesn't seem the case - at least, not from Perry's perspective.

The American Idol judge, who courted controversy last week when she kissed an contestant uninivited, made headlines yet again by throwing some not-so-subtle shade in the direction of her former friend.

During the show's auditions, one contestant is asked what musician he admires most. He replies: "I'm sorry for this, Katy... Taylor Swift."

Perry replies "Oh, you don't have to be sorry", when he reiterates: "I love Taylor Swift."

She then says: "I love her, as a songwriter, as well" while her grimace says it all.

Watch it below: