The Chainsmokers ran the show this year at the iHeartRadio music awards.
The Chainsmokers were up for 11 nominations (technically 9, since they had two songs in two of the categories) and walked away with five awards, including Best New Artist and all dance-related awards. Comparatively, Drake and Twenty One Pilots won just four apiece.
The Chainsmokers won Dance Song of the Year for “Closer,” which was actually up against their own “Don’t Let Me Down,” as well; they also won Dance Artist of the Year and Dance Album of the Year for their Collage EP. 
The Chainsmokers also performed at the event, starting with their song “Paris” and transitioning into “Something Just Like This” as Chris Martin joined them on stage.
https://youtu.be/lSA2P8C39LY
See the full list of winners below:
Innovator Award – Bruno Mars
Song of the Year – Justin Timberlake – “Can’t Stop The Feeling!”
Female Artist of the Year – Adele
Male Artist of the Year – Justin Bieber
Best New Artist (presented by the all-new 2017 Subaru Impreza®) –The Chainsmokers
Best Duo/Group of the Year – Twenty One Pilots
Best New Pop Artist: (New Category) – The Chainsmokers
Pop Album of the Year – Adele – 25
Producer of the Year: (New Category) – Benny Blanco
Alternative Rock Song of the Year – Twenty One Pilots – “Heathens”
Alternative Rock Album of the Year – Twenty One Pilots – Blurryface
Rock Song of the Year – Green Day – “Bang Bang”
Rock Artist of the Year – Disturbed
Best New Rock/Alternative Rock Artist: (New Category) – The Strumbellas
Rock Album of the Year – Metallica – Hardwired… to Self-Destruct
Best Underground Alternative Band (New Category) (Socially Voted Category) – Pierce the Veil
Country Song of the Year – Dierks Bentley – “Somewhere On A Beach”
Country Artist of the Year – Thomas Rhett
Best New Country Artist (New Category) – Kelsea Ballerini
Country Album of the Year – Chris Stapleton – Traveller
Dance Song of the Year – The Chainsmokers – “Closer (ft. Halsey)”
Dance Artist of the Year – The Chainsmokers
Dance Album of the Year – The Chainsmokers – Collage EP
Hip-Hop Song of the Year – Drake – “One Dance (ft. WizKid and Kyla)”
Hip-Hop Artist of the Year – Drake
Best New Hip-Hop Artist (New Category) – Chance The Rapper
R&B Song of the Year – Rihanna – “Work (ft. Drake)”
R&B Artist of the Year – The Weeknd
R&B Album of the Year – Rihanna – Anti
Best New R&B Artist (New Category) – Bryson Tiller
Latin Song of the Year – Enrique Iglesias – “Duele El Corazon (ft. Wisin)”
Latin Artist of the Year – Nicky Jam
Best New Latin Artist (New Category) – CNCO
Latin Album of the Year – J Balvin – Energía
Regional Mexican Song of the Year – Banda Sinaloense MS de Sergio Lizárraga – “Solo Con Verte”
Regional Mexican Artist of the Year – Calibre 50
Regional Mexican Album of the Year – Los Plebes Del Rancho De Ariel Camacho – Recuerden Mi Estilo
Best New Regional Mexican Artist (New Category) – Joss Favela
Best Tour – Coldplay – A Head Full of Dreams Tour
Best Lyrics (Socially Voted Category) – Justin Bieber – “Love Yourself”
Best Collaboration (Socially Voted Category) – Rihanna – “Work (ft. Drake)”
Best Cover Song (Socially Voted Category) – Fifth Harmony – “Ex’s and Oh’s”
Social Star Award (New Category) (Socially Voted Category) – Jack and Jack from Snapchat
Best Fan Army (presented by Taco Bell) (Socially Voted Category) – Fifth Harmony – Harmonizers
Note: The winner of the Best Music Video category has yet to be announced, but here are the nominees:
Best Music Video (New Category) (Socially Voted Category) –
Justin Timberlake – “Can’t Stop the Feeling!”
The Chainsmokers – “Don’t Let Me Down (ft. Daya)”
Beyoncé – “Formation”
Nicky Jam – “Hasta El Amanecer”
Twenty One Pilots – “Heathens”
Coldplay – “Hymn for the Weekend”
Mike Posner – “I Took A Pill In Ibiza”
ZAYN – “Pillowtalk”
Ariana Grande – “Side to Side (ft. Nicki Minaj)”
Calvin Harris – “This Is What You Came For (ft. Rihanna)”
Rihanna – “Work (ft. Drake)”
Fifth Harmony – “Work From Home (ft. Ty Dolla $ign)”
