Julia Roberts, Joan Baez and Little Mix Join Taylor Swift on Stage

After last night’s 1989 World Tour stop, Taylor Swift officially has six new additions to her squad.

Taylor Swift invited the members of Little Mix on stage at her show in Santa Clara on Saturday, joining them in a performance of their hit “Black Magic.” “They smashed it tonight in front of 50,000 screaming fans,” Swift wrote on Twitter after the show. “Amazing.”

But the members of Little Mix weren’t the only surprise guest at Swift’s Santa Clara stop: Joan Baez and Julia Roberts also appeared onstage, where they “danced it out to ‘Style,’” Swift tweeted. “These two women are my heroes. What an honor.”

So far, everyone from Fetty Wap to the U.S. Women’s National Soccer Team have joined Swift on stage. See all the stars Swift has brought out to celebrate 1989 here.

This article originally appeared on EW.com

Subscribe to TIME

Sign up for our Entertainment newsletter. Subscribe to More to the Story to get the context you need for the pop culture you love.

Please enter a valid email address.

* The request timed out and you did not successfully sign up. Please attempt to sign up again.

Sign Up Now

An unexpected error has occurred with your sign up. Please try again later.

Check the box if you do not wish to receive promotional offers via email from TIME.

You can unsubscribe at any time. By signing up you are agreeing to our Terms of Service and Privacy Policy. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Thank you!

For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Contact us at letters@time.com.