Watch Fifth Harmony Sing Happy Birthday to Normani Hamilton

Fifth Harmony during and interview with Facebook
Courtesy Photo

Fifth Harmony celebrate Normani Hamilton's birthday during a Facebook interview.

Fifth Harmony swung by Facebook today (May 31), and they talked up their new album, role models, and more in the Facebook Live chat.

One of the best parts is when the ladies broke out an impromptu a cappella version of "Happy Birthday," for Normani Hamilton's 20th birthday today. Check it out below.