Following Camila Cabello's departure [1], the remaining members of Fifth Harmony are continuing as a group of four [2], and under the same name. Despite that, many celebrities — like Ellen DeGeneres [3] and Michael Strahan [4] — have jokingly volunteered to join the group, thus spawning #BeThe5thChallenge.

Shortly after the hashtag went viral, Jamie Lynn Spears joined in on the fun and photoshopped herself into a picture with Ally, Normani, Dinah, and Lauren. In her tweet, she said she decided to "jump on the bandwagon" [5] since she often listens to Fifth Harmony with her daughter, Maddie. The group responded excitedly [6], asking her to say hello to Maddie.

But it didn't end there. Weeks later, Jamie Lynn's big sister, Britney Spears, chimed in on both Twitter and Instagram [7] saying, "My sister is now the fifth member."

My sister is now the fifth member 😜😜😜 @FifthHarmony [8] pic.twitter.com/MzWl4sKPZa [9]

— Britney Spears (@britneyspears) January 24, 2017 [10]

After seeing the so-called princess of pop's tweet, Fifth Harmony said [11], "We've got plenty of room for a Sixth," implying that Britney herself can join the group! Could you even imagine?