The song is expected to be a retaliation against Taylor's scathing hit 'Bad Blood' which took aim at Katy, who Taylor once described as her "straight-up enemy".

Enda Kenny has launched a withering attack on the economic policies of Bertie Ahern's Fianna Fáil governments; an investigation is underway after shots were fired at a house in Co Kildare; how a missed golf putt cost sponsor €128m; and John Creedon takes on the Wild Atlantic Way. Here’s today’s lunchtime irishexaminer.com round-up.

Katy Perry is locked in a real estate battle with a group of nuns.

Although majority of Demi's fans are thrilled with the announcement as her career began on the Disney Channel's Camp Rock, other aren't quite sure.

Yes. Yes he was.

Katy Perry is giving John Mayer "another chance".

Did you see Louis Walsh’s latest boyband offering on the Late Late Show last night?

Well, this is a bit mad.

Katy Perry said to be "doing really good" following her split from John Mayer earlier this year.

Katy Perry and John Mayer have split up, according to reports.

One Direction have topped another chart — a top 10 of the most popular acts in the world.

The 'E.T.' hitmaker Katy Perry is convinced there are other life-forms in the galaxy and would love to ask US President Barack Obama what he believes on the subject.