Yet Katy Perry seems to have already found a reason to be mad at Taylor Swift, after the Shake It Off hitmaker, 28, made Katy's private apology letter very public. Katy, 33, is believed to feel 'upset' because the introduction to the letter - which was published on Instagram on Tuesday - suggests Katy accepts 'full responsibility'. Katy Perry (left) is reportedly 'upset' with Taylor Swift (right) again, just days after she extended an olive brand to end their six-year feud'Katy expected that Taylor would post something about it,' a friend told The Sun Online. In 2014, Taylor released the single Bad Blood, which was believed to be about her feud with Katy, and the star has seemingly retaliated with single Swish Swish, which is also reportedly about their battle. The hitmaker admits that her single Swish Swish is a direct 'reaction' to Taylor's, as she says the star has to learn about 'the law of cause and effect'.

Source: Daily Mail May 09, 2018 13:08 UTC