The way Camila Cabello quit Fifth Harmony will surprise you

On Sunday, Fifth Harmony quickly became "Fourth Harmony" after the group posted a note on the band's official Twitter account revealing member Camila Cabello had parted ways with the group.  

In the note — signed by remaining members Ally Brooke, Normani Kordei, Dinah Jane and Lauren Jauregui — the girls wish Cabello well after revealing they were notified she would be moving on "via her representatives." 

The remaining girls reassure their fans — called Harmonizers — that they will be continuing as a foursome while also working on their respective solo endeavors. 

Cabello flirted with going solo last year when she was featured on Shawn Mendes' hit song, "I Know What You Did Last Summer." The song hit No. 20 on the Billboard Hot 100 chart. Cabello is also featured on the Machine Gun Kelly song "Bad Things," which just reached No. 10.

The band had announced at the iHeartRadio Jingle Ball concert earlier this month that they had started work on their third album. That news helped settle talk of a breakup, which the girls addressed earlier this year in an interview with Entertainment Tonight. "Fifth Harmony is definitely our first love ... it's always been the foundation of everything," Dinah Jane said.