Taylor Swift The 1989 World Tour Live In New Jersey - Night 1Photo: Kevin Mazur/LP5/WireImage/Getty

In January, Taylor Swift, the singer Lorde and the sisters who form the band Haim vacationed in Catalina, California.

The trip (which also involved actress Jaime King and figure skater Gracie Gold) was more personal time than publicity stunt, but these members of Swift’s “squad” showed up as part of her world tour.

In 2015, Swift demonstrated that business is better when you do it with friends. Special guests included everyone from this year’s Canadian breakout stars The Weeknd (pictured) and Allesia Cara to Broadway crooner Idina Menzel.

And as the #squad got bigger, The 1989 World Tour’s earnings grew to a staggering US$173 million through mid-October.

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