Minutes after the ladies of Fifth Harmony stepped up to support Lauren Jauregui during her duet with Halsey, the "Strangers" singer returned the favor.
WATCH: Fifth Harmony Supports Lauren During Duet With Halsey
While Fifth Harmony took the stage at the Kiss 108 Jingle Ball, Halsey sneaked into the front row to cheer on the girls from the best seat in the house.
The singer was caught on film singing and bopping along with her friends during their performance of "Worth It."
So much sisterly love. ❤️ We can't handle it. 😭