"Her demographic is so big - she has fans from 8-10 years right up to 50-60 years old," Alvarez said.
"It's good to have events for the whole family to attend as part of our summer calendar, we're also doing an all ages Sticky Fingers show on January 3," he said.
Alvarez describes Tones and I as the "biggest breakthrough artist of the year worldwide", and believes the all ages show, which can cater for up to 4000 people, will be a sell-out.
"The hype around her and her music is so big."
This year has been a massive one for Tones And I, starting with her debut single Johnny Run Away, which was released on March 1. Next came what was to become a huge global hit, Dance Monkey on May 10, reaching number one on official singles charts in more than14 countries including the UK, Ireland, Germany, New Zealand, Australia and more.
She has also amassed hundreds of millions of streams.
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Tones and I, who released her debut EP The Kids Are Coming on August 30, holds the record for the longest consecutive number 1 for an Australian artist on the ARIA singles chart. Not a bad breakout year for someone who was busking on the streets and living out of a van only six months ago.
Tickets for Tones and I's all ages show will be on sale from 7pm on Monday, October 28 at ticketfairy.com. There will be pre-sales from Thursday, October 24 at 7pm until 11.59pm on Sunday, October 27.
She will be joined by New Zealand pop act Theia, who has been gaining a lot of attention since the release of her breakthrough hit Roam from her debut EP. Earlier this year Theia released her second EP, Not Your Princess featuring songs such as Bye Bye, Candy and Not Your Princess.