Look Who's Joining Taylor Swift's '1989' Tour

BFFs forever.

Friends that tour together, stay together.

OK, maybe that’s not an actual proven adage, but Taylor Swift and her besties, the ladies of HAIM, will be staying together this summer when they hit the road. The “Shake It Off” singer took to Instagram on Sunday (February 1) to officially announce that sisters Este, Danielle and Alana will be the opening act for selected dates on her 1989 World Tour.

"HAIM IS JOINING THE 1989 TOUR THIS IS NOT A DRILL I REPEAT HAIM IS JOINING THE 1989 TOUR @haimtheband," she wrote in the caption.

Judging by the subsequent tweet sent out by the trio, they’re just as excited about doing the “Forever” friendship dance with the pop star in some of their favorite cities.

Here’s the tour stops with Taylor Swift and HAIM: