Fifth Harmony: Chicago KISS FM Jingle Ball 2013

Normani Hamilton and Dinah Hansen of Fifth Harmony pose with Robin Thicke backstage at KISS FM’s 2013 Jingle Ball at the United Center on Monday night (December 9) in Chicago, Ill.

The girls were later joined by their band mates Ally Brooke, Camila Cabello, and Lauren Jauregui as they hit the stage to perform.

PHOTOS: Check out the latest pics of Fifth Harmony

“HELLO CHICAGO!!!! We’re so excited to be at @1035KISSFM’s #JingleBall today! Who is gonna be there???” 5H tweeted earlier in the day.

Fifth Harmony has been on a whirlwind of performances and sang in Seattle the night before.

15+ pics inside…