In 2015, the band released its first studio album Reflection. The LP was a big hit in the USA and abroad. It reached the fifth spot on Billboard 200 and went platinum in the USA.
Even though the girl band was very successful, Camila was starting to think about a solo career. In November 2015, together with Shawn Mendez, the singer released a single "I Know What You Did Last Summer". The single was a big hit, reaching the 20th spot on Billboard Hot 100. After some time, it went platinum in many countries. A month later, Fifth Harmony became the best band of the year according to Billboard Women in Music 2015.
In May 2016, Fifth Harmony released their second LP7/27, named in honor of their foundation date. The album was very successful. It reached the 4th spot on Billboard 200 and sold 1.6 million copies worldwide in just 6 months. The band received MTV Video Music Awards, MTV Europe Music Award, Nickelodeon Kids' Choice Awards, and People's Choice Awards.
In October 2016, Camila released her second solo single "Bad Things". The single made it to the fourth spot of Billboard Hot 100. Cabello was included in the Time magazine’s list of 25 most influential teenagers of 2016. In the end of 2016, Camila left Fifth Harmony to pursue a solo career.
In March 2017, Camila participated in the recording of the song "Hey Ma[en]", which became a soundtrack for The Fate of The Furious. Two months later, she recorded a single “Havana”, which became a huge hit, topping all the popular charts and becoming platinum numerous times.
In 2018, Camila released her debut solo LP Camila. It immediately topped Billboard 200.