Taylor Swift invites '2,000 foster children and their families' to watch Reputation tour rehearsals

Pop star is preparing to set out on her massive world tour in support of her latest album

(Rex Features)

Taylor Swift invited more than 2,000 special guests to the final dress rehearsal of her upcoming reputation world tour, according to reports.

The pop star was pictured with several foster children from Arizona on Instagram, many of whom were experiencing their first ever concert.

An attendee told Entertainment Weekly that Swift spoke with the children and foster parents before the show, took photos with them, signed copies of her latest album, and hosted a pizza party for them.

Abbi Molly posted a photo on Instagram and wrote: "A night my girls and I will always remember - meeting Taylor Swift! Thank you for such a generous evening with your littlest fans. Your show is amazing - you and your team did an incredible job!"

Another parent, going by the Instagram name Momma Bear, also shared pictures and wrote: "When @taylorswift invites you to her final dress rehearsal, you go. We couldn't bring cameras in, just know that if you are able to see her #reputationstadiumtour DO IT! She was such a gracious and generous hostess... completely with a pizza party and photo op afterward."

"Private concert for foster and adopted families," she continued. "She [Taylor] will never promote that because she's so humble. I got to meet her dad and give him some thank you notes from the kids and he teared up. He was so sweet. I got to thank him for raising such a generous and gracious daughter."

Swift embarks on her massive reputation tour from 8 May.