No-one enjoyed the AMAs more than Frankie Grande

Ariana Grande's brother Frankie was having the time of his life at the 2015 American Music Awards. The guy was LIVING, people – check out TheFIX's super-cut to see why.

First, the cockatoo-haired 32-year-old delivered the greatest over-enthusiastic round of applause we've ever seen.

And then he danced like no-one (or maybe everyone) was watching while his sister cranked out her hit 'Focus'.

Former Big Brother US contestant Frankie also fist-pumped the air when his 22-year-old sis won the Favourite Pop/Rock Female Award. Yes, Frankie Grande was living.

Earlier in the night he co-hosted the AMAs' official red carpet coverage. But later on, he got to meet cool people backstage like Celine Dion. #WINNING.

Frankie and Ariana Grande with Celine Dion; Frankie with Meghan Trainor.

WAIT UP! One person might've enjoyed it more: Marjorie "Nonna" Grande.

Nonna Grande loves it. Images: Getty.