The festival was due to be held next month in Philadelphia and headlined by SZA and Lizzo
In a new interview, Crystal Williams said that fat-shaming is "something that happens on an everyday basis" within the music industry
It comes after the pop icon omitted the singer's name during a show last week
"Lizzo was kind to me and others for a decade before she was "cool", and she checked in in me when no one cared"
Accusations against the singer came to light earlier this week
Three of the singer's former dancers have accused Lizzo of creating a hostile work environment and engaging in sexual harassment
"It’s shocking to read a statement like that," said Noelle Rodriguez
The pop star is being sued by three of her former backup dancers
The singer was rumoured to have left Lizzo’s name out following recent allegations
The comments come following the singer facing allegations of sexual harassment and a hostile workplace