How celebrities double-date: Taylor and Calvin, and Gigi and Joe*

Two of celebville's hottest new couples went on a seriously cool double-date in London yesterday – taking to the River Thames waves for a private boat ride.

Taylor Swift, who this evening takes her tour to Dublin, was there with her boyf Calvin Harris in tow, while Gigi Hadid brought love-interest Joe Jonas.

Then, just to make the whole situation even cooler, former Victoria's Secret angel Karlie Kloss tagged along for good measure. Can you even be a third wheel is you're one of the world's highest paid models? Seemingly so.

Tay-Tay, 25, and 31-year-old Calvin were recently named as showbiz's most powerful couple – and they certainly look incredibly loved-up as the boat made its way through the English capital.

Less tactile, but every bit as cute, were 22-year-old Gigi and Joe, 25 – and good to see that, once again, there's no awkwardness whatsoever between exes Miss Swift and Mr Jonas.

Karlie Kloss can be seen in the centre of the same image – which was posted this morning to Taylor's Instagram account – smiling warmly. Her long-term boyfriend, 30-year-old entrepeneur Joshua Kushner, was sadly absent.

​"Little known fact: Karlie is secretly an unofficial historian/London tour guide. Kind of,” Swift captioned the photo.

It has already notched up in excess of a million likes.