Fifth Harmony might reconsider changing their name to Fourth Harmony.
The singers took to Instagram late Sunday evening to announce that Camila Cabello has left the chart-topping pop group.
"After 4 and a half years of being together, we have been informed via her representatives that Camila has decided to leave Fifth Harmony," the statement read. "We wish her well."
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It continued, "You Harmonizers have been there with us since the beginning, you've supported us, and with your love and support, we will continue on. That being said, we are excited to announce that we will be moving forward with the four of us- Ally Brooke, Normani Kordei, Dinah Jane and Lauren Jauregui for our fans. We are four strong, committed women who will continue with Fifth Harmony as well as our solo endeavors.
"We are excited for our future, and we can't wait for what the new year brings. Harmonizers, we are in this together. We love you with all of our heart," their lengthy message concluded.
Within minutes, fans flocked to the comments section noticeably distraught about Camila's surprise exit.
Fifth Harmony was brought together during the second season of "The X Factor." Since then, the group has commanded the charts with singles like "Work From Home" and "Bo$$." They most recently performed Sunday evening at Y100's Jingle Ball in Miami, and Cabello did perform onstage with both her former bandmates and Justin Bieber.
E! News has reached out to Cabello's rep for further comment.