#IKnewItIKnewYou is the hashtag and title of Taylor Swift’s original song for Toy Story 5, which debuted at No. 1 on the Billboard Hot 100 in June 2026 and gave her a record 15th career chart-topper. The tag aggregates fan reaction videos, lyric edits, theater clips, and parent–child montages set to the song.
Quick Facts
- Announced: June 1, 2026 by Taylor Swift
- Released: June 5, 2026 (single)
- Featured in: Toy Story 5 (Pixar)
- Writers/producers: Taylor Swift and Jack Antonoff
- Chart peak: No. 1, Billboard Hot 100 (debut)
- First-week: 27.2 million on-demand streams, 87,000 digital downloads, 46.7 million radio audience impressions
Origin
On June 1, 2026, Taylor Swift announced that she had contributed an original song to Pixar’s Toy Story 5. The single, “I Knew It, I Knew You,” dropped four days later on June 5 — two weeks before the film’s June 19 theatrical release. The tie-in made it Swift’s first feature-film soundtrack original since “Carolina” (2022) and the rare original-song collaboration for a Pixar release.
Chart Performance
The song debuted at No. 1 on the Billboard Hot 100, giving Swift her 15th career Hot 100 No. 1 and moving her past Rihanna and Drake (14 each) into sole possession of third place on the all-time list, behind only Mariah Carey (19) and The Beatles (20). It was also Swift’s ninth chart-topping debut entry, breaking her tie with Ariana Grande for the most by any female artist. In its opening week the track logged 27.2 million on-demand streams, 87,000 in digital downloads, and 46.7 million radio audience impressions.
The Song and the Film
The song plays over a late sequence in #ToyStory 5 — a film that follows Jessie, Woody, and Buzz Lightyear two years after Toy Story 4 as they confront Lilypad, the kid-tablet that has become Bonnie’s new favorite plaything. The track’s parent-and-child framing is the emotional spine of that arc, and within days fans were cutting their own home-video montages to it on TikTok.
Cultural Impact
On TikTok the song fused with the broader Toy Story 5 nostalgia carousel format — a parent–child slideshow ending on “There Was a Time” beat. The #IKnewItIKnewYou tag also collected memorial-style edits, theater-reaction clips, and franchise retrospectives that ran the original 1995 Toy Story footage alongside the 2026 sequel. The combination of Swift’s chart record and Toy Story 5’s $312 million global opening made the song-and-film pairing one of the largest cross-platform cultural moments of the month.