Godmother Taylor Swift Delivers Sweet Dedication to Jaime King's Baby, While Julia Roberts Joins the Squad

Taylor Swift has been one busy lady.

As her headline-making 1989 tour rolls on, Swift hit all of us right in the feels with a touching on-stage tribute to her godson -- Jaime King's baby boy.

"I was holding this little baby the other night and I was just thinking differently," Swift told her audience, referencing time spent with King's son. "When you're holding onto something that's so innocent and so perfect and has no idea what's coming for it with the world. The world is going to throw so many things at you as we grow up."

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Swift then launched into her song "Never Grow Up," off her 2010 album Speak Now.

"She was so open and candid and really made us all feel like we were her friends," said Swiftie Kay Marie Goddard, who captured the moment on video. "It was really cool knowing that it was really special for Taylor and we got to share that with her."

Just a few weeks ago, Swift referenced the song's lyrics in an Instagram post about her godson.

Naturally, King caught wind of Swift's sweet dedication and tweeted about the moment.

This is so beautiful Tay - Leo Thames is so blessed. https://t.co/BavDEoMijt

— Jaime King (@Jaime_King) August 16, 2015

"This is so beautiful Tay - Leo Thames is so blessed," she wrote.

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And that wasn't the only surprising moment during Swift's Saturday show. The 25-year-old also welcomed two living legends into her growing squad, inviting Julia Roberts and Joan Baez to join her on stage.

"These two women are my heroes," Swift posted on Instagram. "What an honor."

"We were so surprised!" said Goddard. "Taylor had already brought out Little Mix earlier and sang 'Never Grow Up' so no one was really expecting any special guests during Style! Julia and Joan looked like they were having so much fun on stage."

WATCH: Fifth Harmony Gushes About Performing With Taylor Swift

Swift has treated concertgoers to a laundry list of special guests over the course of her latest tour. Among them: rising girl group Fifth Harmony, who gushed to ET about the experience at Sunday's Teen Choice Awards.

"It was a dream come true," Camila Cabello told ET of the performance, in which Swift joined the girls for a rendition of their hit, "Worth It." "She learned the choreography, wore our tour outfit -- it was seriously a night we'll never forget."

See what else the girls of 5H had to say about Swift in the video below.

Fifth Harmony Fangirls Over Performing with Taylor Swift and Sings Little Mix!

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