Horan made the announcement on Twitter, saying he wants to "show off the incredible music coming out of our lovely little country."

So for my shows I wanted to make it as Irish as possible and show off the incredible music coming out of our lovely little country ??

— Niall Horan (@NiallOfficial) August 15, 2017

The Mullingar man will bring along Dublin's Gavin James for his North American dates. It looks like Gavin James is every bit as excited about this.

You all know that one of my favourite artists is @gavinjames.so I'm delighted that Gav has agreed to come to the USA with me . ??

— Niall Horan (@NiallOfficial) August 15, 2017

Can't wait for this @NiallOfficial ? Irish in America ????????????? https://t.co/pEyXNYxb2o

— Gavin James (@gavinjames) August 15, 2017

Picture This will appear with Horan in London and Stockholm.

London and Stockholm ! @BandPictureThis are coming .These guys are great guys with great music and making a lot of noise right now . ?? pic.twitter.com/PT5pHBRGTx

— Niall Horan (@NiallOfficial) August 15, 2017

For his sold-out gig at Dublin's Olympia Theatre, Horan will welcome local rockers Wild Youth.

For the show in the Olympia, my good friends @bandwildyouth will be opening the show.The music these guys are producing is great.Must see pic.twitter.com/q8oB4UqGhN

— Niall Horan (@NiallOfficial) August 15, 2017

The Olympia Theatre gig kicks off the tour this month, on August 29.