Happy one year anniversary to 5th Harmony! It has been one whole year since Dinah, Lauren, Ally, Normani, and Camila began their journey as 5th Harmony, and the girls celebrated in a very big way!

The ladies shared the excitement with their fans Harmonizers, while in New York City, with five pop-up shows, concluding at the iHeartRadio theater.

The show at the iHeartRadio theater was based on a first-come, first-serve basis, with 20 lucky fans winning entry to the show on New York's z100. Within their celebratory one year, they have built a Harmonizer army, who were waiting outside the iHeartRadio theater hours and hours before the show even started.

In fact, their single "Miss Movin On" was only just recently released because fans demanded it be released early. The music video has over 2.5 million views!

The girls have spent the last 6 months recording their album, which they have been very involved in the process of, and are in the middle of their #HarmonizeAmerica mall tour traveling all across the U.S.

But 5th Harmony isn't stopping there. Harmonizers can catch the ladies, along with Cher Lloyd, in the fall for the "I Wish" tour.

Photos by Jess Mandia for iHeartRadio