The argument started back in 2011 when Calvin Harris, scheduled to open for Katy's gig, cancelled last minute due to set arrangements. But with the release of the video-which both briefly prolongs the lifespan of "Swish Swish" and signals that the end is near-it's still worth ruminating on the whole saga, a freaky and memorable faceplant by a one-time Teflon pop artist whose career had up to this point been a smooth ascent to the top with an extended ride at cruising altitude.
Rod Stewart will sing a reworked version of his hit "Da Ya Think I'm Sexy?" remotely from Las Vegas with pop band DNCE; Demi Lovato will also perform remotely from Vegas.
And when you take a closer look at the video, the whole concept is about Katy coming for Taylor's crown. There's no better launchpad for this new phase in her career than closing up old wounds, and accepting Perry's offer for peace will show the world that she doesn't always hold a grudge.
If Charli XCX's "Boys" video had you scrambling to name all of its cameos, Katy Perry's clip for "Swish Swish" will really give you a run for your money.
They have huge muscular players, an ace coach in the form of Terry Crews, and are scoring points left right and centre.
Trump expected to increase US troops in Afghanistan
There will substantial pressure on the US to agree to an early resumption of "unconditional dialogue" with the Taliban. The British Empire three times attempted military takeovers of Afghanistan - twice in the 1800s and the last in 1918.
Black-clad anarchists storm Berkeley rally, assaulting 5
The police later defended their decision by arguing that keeping the anarchists out would have led to greater violence. A large police presence is present in the city and officers have been quick to clamp down on any skirmishes.
Pastore leaving for Monaco — Mercato PSG
Marquinhos said he and his Paris Saint-Germain team-mates are waiting for Monaco star Kylian Mbappe to join the Ligue 1 giants. AS Monaco have joined the race to sign Chelsea striker Diego Costa, according to Evening Standard .