Taylor Swift surprises fans at the Toy Story 5 premiere in Los Angeles

• Swift made a surprise appearance at the Toy Story 5 world premiere
• Her soundtrack song, "I Knew It, I Knew You," was released on 4 June
• Swift co-wrote the song with Jack Antonoff for the character Jessie

Taylor Swift made an unannounced appearance at the world premiere of Toy Story 5 on Tuesday night in Los Angeles. The singer did not walk the step-and-repeat but joined the cast for a group photograph at the celebrations held at the Dolby Theatre.

Her attendance came just days after the release of her contribution to the film's soundtrack. Swift's song, "I Knew It, I Knew You," dropped on 4 June, accompanied by a social media post in which she shared a vintage home video of herself as a young girl, wearing a red cowgirl hat and a shirt embroidered with boots.

Writing the song

"Writing this song felt like a musical departure and coming home at the same time. Creating something for Jessie was a new challenge and also felt like second nature all at once. And being a toystory kid from the age of 5 til now… is an adventure I plan to be on, to infinity and beyond." she wrote alongside the post. Swift went on to pay tribute to the creative figures behind the franchise:

"Thank you to the brilliant Andrew Stanton for imagining me for this, all those years ago when you wrote this newest film. Thank you to the incomparable randynewmanofficial for the gorgeous sonic tapestry of songs and scores you've meticulously woven over the years.

"You created the Toy Story musical world, and we are lucky to get to live in it. By we, I mean myself and my pal jackantonoff. We wrote this with so much adoration for these characters that made us laugh and helped us learn lessons and think outside the backyard all throughout our childhoods."

About Toy Story 5

The fifth instalment of the beloved franchise reunites Woody and Buzz, who join forces with Jessie, Forky, Slinky Dog, Hamm, Trixie and an army of Buzz Lightyears to rescue Bonnie from her new Lilypad smart tablet — and to prevent technology from taking over children's lives altogether. Toy Story 5 opens in cinemas on 19 June.