Katy Perry
Perry famously feuded with Taylor Swift before the latter became a worldwide cultural phenomenon.
Critics are saying Katy's new music is "disappointing", "dated"and lacking "her old sense of fun".
The singer's X-rated oversharing begged for a snappy retort from her longtime partner.
The singer was asked about her decision to reunite with her Teenage Dream collaborator during an appearance on Call Her Daddy.
The Grammy nominee's return to the pop world isn't exactly off to the smoothest of starts.
The environment department of the Balearic Islands is looking into whether Katy and her crew caused damage to a protected area of Ibiza.
"Now I know what every parent went through in 2008. And I’m sorry!"
The chart-topping singer has also been blasted over her choice of collaborator on the ostensibly feminist anthem.
The American Idol judge previously told fans to "fight me" if they disagreed with her praise for this artist.
Even the singer's mum was convinced she'd seen her on the red carpet.