The girls in the “Day After Day” home-video footage are not clearly identified in the standard song credits or widely available references, so there is no solid public confirmation of who they are. The safest answer is that their identities remain uncertain.
What is known
Badfinger’s “Day After Day” is from the band’s 1971 album Straight Up , and the song was written by Pete Ham and produced by George Harrison. The track became one of Badfinger’s best-known hits, but the basic song references do not identify the girls seen in the home-video style footage.
That matters because a lot of music video and archival footage from that era was assembled from loose visual material rather than a carefully documented cast list. In cases like this, unless a contemporary interview, production note, or official archive names the people on screen, any claim about their identities is speculation.
Rumors and likely confusion
Some online discussions treat the footage as if it must feature girlfriends, models, or people connected to the band, but those claims are usually unverified. The available material I found about the song focuses on its writing, production, and chart success, not on naming the women in the footage.
So the most accurate answer is simple: the girls have not been reliably identified in the public record, at least not in the commonly cited sources tied to the song. If you have a specific video version in mind, there may be a production credit or later interview that narrows it down, but the general answer stays the same.