Taylor Swift brought out actress Julia Roberts, folk singer Joan Baez and performed with British group Little Mix during her second tour night in Santa Clara, California

By Lindsay Kimble
Updated August 16, 2015 11:00 AM
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Credit: John Medina/LP5/Getty

Taylor Swift continued her streak of surprising 1989 world tour concertgoers on Saturday, bringing onstage not only special musical guests Little Mix but also some serious legends – Julia Roberts and folk singer Joan Baez!

The singer’s second sold-out night in Santa Clara, California, at Levi’s Stadium was just another chance to add to her already impressive squad.

“Little Mix smashed it in front of 50,000 screaming fans tonight,” Swift wrote on Instagram, sharing a pic with the British girl group.

Swift and the Little Mix girls (Perrie Edwards, Jesy Nelson, Jade Thirlwall and Leigh-Anne Pinnock) sang the group’s hit single “Black Magic.”

The biggest surprise of the night, however, was Swift’s “Style” runway guests: Oscar winner Roberts and folk singer Baez.

“Tonight Joan Baez and Julia Roberts danced it out to ‘Style’. These two women are my heroes. What an honor,” Swift wrote on Instagram, sharing a pic of Roberts and Baez shaking it off on the stage. Both women donned 1989 tour t-shirts for the appearance.

Swift and Roberts actually have a big screen history: the pair both starred in 2010’s Valentine’s Day, although they never shared any scenes together.

Taylor Swift’s Circle of Friends & Romances

Just one night before, Swift became the special sixth member of a different band: Fifth Harmony.

Wearing matching costumes, the new mega-group performed “Worth It” for cheering fans.

Swift’s tour has included multiple surprise musical guests, including Andy Grammar, Nick Jonas and even Fetty Wap.