The first full-length music video off the album, for "Cardigan," features a whole slew of Easter eggs. The first scene features an instance of her "lucky number" 13 and a photograph of her grandfather, while the "waterfall" segment seems to reference her own past music videos and even the music video of her ex Harry Styles.
Her current boyfriend, Joe Alwyn, also seems to be the subject of a few Easter eggs. The repeated use of the word "favourite" could reference his role in The Favourite, and the frequent "gold" motif that Swift has used to allude to him before pops up again in the video.