The tour begins on 1 September and will visit countries including Germany, Switzerland and Norway.
Venues include the OVO Wembley Arena, London’s second-largest indoor arena, and 3Arena Dublin, which has a capacity of 13,000.
“It [Dublin] was the first ever arena, or even show, that I went to,” said Nieve.
“I was like 14 years old, my mum took me to watch Sam Smith, I was standing there like wow, this is what I want to do.
“I feel like I realised that in that moment, and then, we get to play it.”
Nieve, who has 97,000 followers on TikTok, is no stranger to big crowds.
She played on the BBC Music Introducing stage at Glastonbury last year and has performed at more than 20 festivals this year.