Kelly Rowland, Flo Rida, JoJo, 112, Baby Bash and Travie McCoy also feature
The singer accidentally revealed the gender of Beyoncé's first born back in 2011
Early noughties 'Pop Idol' stars, Y2K staples and contemporary left field pop artists all get a hero's welcome in south London
"It's a decision that the ladies would have to make," Mathew Knowles said
Sparks, who collaborated with Brown on the 2008 track 'No Air', said the awards body "shouldn’t have cancelled the performance", which would've seen Brown pay tribute to Michael Jackson
The former Destiny's Child singer accepted an AMA on Brown's behalf last weekend
Brown also claimed that the awards cancelled a planned Michael Jackson tribute from him at the last minute
"Yes, and her best friend-sister is one of the biggest stars in the world too," Rowland asserted of herself
Confidence Man, Kelis and more are also heading to London's Brockwell Park next June
Organisers have revealed the full program for next year's festival, which will also include performances from the likes of Kylie Minogue, Jessica Mauboy, MUNA, G Flip and Peach PRC