For 'Strip That Down' hitmaker Liam, 23, it's the second time he would've played at the annual ceremony after One Direction performed in 2015 before their hiatus.
He said: ''It's always a great day with a brilliant line-up.
''I'm looking forward to performing my new songs and returning to the stage - but as a solo artist this time.''
Dua, 22, said: ''I'm thrilled to be invited back to perform this year. Can't wait to see you there.''
The Vamps - who have played twice before - can't wait to return.
They said: ''The Teen Awards is always a great time to celebrate incredible young individuals and we are extremely proud to be a part of such an important celebration.''
The likes of Stormzy, Little Mix, Ed Sheeran, Harry Styles, Drake and Justin Bieber have all been nominated for awards.
Radio 1 will be streaming live on Radio 1's BBC iPlayer channel, BBC Red Button and Radio 1's website.
Tickets go on sale at 9am on Friday (25.08.17).
The Radio 1 Teen Awards 2017 shortlist is a follows:
Best British Solo Artist
Rag 'N' Bone Man
Best British Group
Best International Solo Artist
Best International Group
Most Entertaining Celebrity
Jade Thirlwall (Little Mix)
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