1989 tour

Taylor Swift joins Fifth Harmony onstage at concert

OK, not really. But the 25-year-old starlet did get to be an honorary fifth member of the pop group when she invited Dinah Jane Hansen, 18, Camila Cabello, 18, Ally Brooke Hernandez, 22, Lauren Jauregui, 19, and Normani Kordei, 19, to perform with her onstage as her surprise guests at her concert on Friday in Santa Clara, California.

"I want to be in Fifth Harmony," Swift tweeted, alongside pics of herself with the group.