Tones and I (real name Toni Watson) has topped the charts around the world with her single, Dance Monkey, just a year after she was busking on the streets of Byron Bay.
And following the singer's triumph at the ARIA Awards, artist Krishool - who recorded a duet with Tones in 2013 - has offered a rare insight into her rise to fame.
Speaking to Daily Mail Australia on Tuesday, Melbourne-based Krishool was also able to resolve the ongoing mystery surrounding how old Tones actually is.
Mystery solved! Australian artist Tones and I (pictured) is 26 years old, according to an old friend. It was previously reported that she was as young as 19, but this was incorrect
'She was like 19 or 20 when I met her in 2013, so I think she's 26 now,' said Krishool, putting an end to bizarre speculation Tones is still a teenager.
In recent months, there have been conflicting reports about how old she actually is, with fans and media outlets wrongly claiming she is 19.
Until recently, her Wikipedia page - which anybody can edit - stated her age as 19.
However, this was updated to her correct age of 26 several days ago after several news websites reported on the matter.
While Tones has not yet commented, her manager told Daily Mail Australia last week that the star 'enjoyed people guessing' and thought it was 'funny'.
Revealed: Artist Krishool (left), who made a video with Tones (right) in 2013, told Daily Mail Australia she 'was like 19 or 20' back then and he believes she is now 26. Pictured in 2013
Confusion: Whereas Wikipedia, which anybody can anonymously edit, stated Tones was 19, before it was changed to 26 several days ago, other sites were already claiming she is 26
Despite reports that Tones began her career as a busker in Byron Bay only recently, Krishool said she had been working towards her dream for much longer.
'I met her at a preliminary audition for The X Factor in 2013,' he claimed.
'I'm always auditioning for TV shows and it's not uncommon to meet talented people doing the same. She was doing lots of gigs and wasn't busking then.
'She's never been afraid to put herself out there and go for it.'
Guessing game: Last week, Tones and I's manager declined to comment on her age, saying the star