Why does she always have celebrities walk with her? To show how she's friends with them?
She invites famous women on stage to empower other girls to know that they can be successful. Not everyone who walks is necessarily Taylor friend, she's just showing you that kindness and hospitality get you far in this world!
Why does she always have celebrities walk with her? To show how she's friends with them?
Most of these celebrities who walk on stage during Style are her concert attendees. They are fans of her music who also happen to be celebrities. Taylor is kind enough to bring them on stage and share them with her fans. Serena, Julia, Joan, etc are all her fans who were just attending the show. Just because her friends shared the stage during style doesn't mean she is showing off everyone as friends
Honestly, even -if- Taylor paid all the special guests she brings out.. That just goes to show you she's successful enough to afford high profile appearances.
But if anyone genuinely thinks Taylor paid Joan Beaz of all people to walk on stage during Style, you need to evaluate your psyche and stop feeding your delusion!
Not everyone who walks is necessarily Taylor friend, she's just showing you that kindness and hospitality get you far in this world!
That's pretty cool. 
