Katy Perry and Taylor Swift appear to have finally ended their feud. The two pop stars have been enemies for the best part of a decade. On Tuesday, Perry posted a picture of a plate of cookies featuring the words "peace at last," and tagged Swift, who responded with 13 heart emojis. Fans are hoping the reconciliation could mean a collab is on the cards. Visit INSIDER's homepage for more stories. Katy Perry and Taylor Swift have officially — finally — ended their feud.