Taylor Swift sang Smelly Cat with Lisa Kudrow on stage

So no-one told Taylor her life was gonna be this way.

In less than a week she's been joined by two Friends stars on stage. First Joey and now Phoebe.

Lisa Kudrow, who played Phoebe, joined Taylor in Los Angeles to perform Smelly Cat together. It was, in the words of Janice, OH. MY. GOD.

Fans at the 1989 World Tour concert couldn't help but join in with Lisa and Taylor to sing about the poor feline.

So, if we're thinking Friends, Phoebe finally got her wish and sang Smelly Cat in front of thousands of people.

Lisa tweeted: So @taylorswift13 is THE best person I've ever met. That was fun. Thanks Taylor.

Taylor was also joined by Selena Gomez and Justin Timberlake during her last night performing in LA.

After her performance with JT, Taylor posted this video of their performance on Instagram.

It's become a running theme for Swifties to see some of Taylor's famous friends on stage with her.

Earlier this year she was joined by Cara Delevingne, Kendall Jenner and Karlie Kloss while on stage in London.

Taylor tweeted a picture of her on stage in London saying thank you.

Other guests to be welcomed on to the stage have included Little Mix, Fifth Harmony and Ryan Tedder.

Little Mix posted on Instagram their love for Taylor after she performed Black Magic with them.

Earlier this month, Rachel Platten - whose single Fight Song could be number one this week - told Newsbeat that Taylor is a "sweetheart".

Rachel performed Fight Song on stage with Swifty in front of 70,000 people in Philadelphia and it was a dream come true.

She said: "My manager and her manager know each other and I was like, 'I would love to meet Taylor.' And it turns out Taylor was a fan of Fight Song.

"She was like, 'Yeah I would like to meet Rachel too.' And so we hung out and we connected and bonded."

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