The group will reportedly perform a medley, with "final songs not decided just yet," as Justin Timberlake teases the awards show.
'N Sync won't just make an appearance at the MTV Video Music Awards: the reuniting boy band will perform, according to several reports.
According to E!'s Marc Malkin, the group will perform a medley with "final songs not decided just yet."
And singer Joey Fatone's father also weighed in, telling RadarOnline the band would perform -- and that his son asked for advice on whether to make the reunion happen.
"I couldn't even say why he's doing it, though," the elder Fatone told the site. "Why, at this point in his life. Now he's his own man."
There's been no official confirmation from the 'N Sync camp, though Justin Timberlake told his 24 million Twitter followers "don't miss" the VMAs on Friday -- he'll be receiving the Video Vanguard award. The annual awards show will air on the network on Sunday at 9 p.m.
Alongside the Backstreet Boys and groups such as 98 Degrees, 'N Sync were a darling of MTV's "TRL" over a decade ago, with videos such as "Bye Bye Bye" and "I Drive Myself Crazy" dominating the top 10 countdown -- making a return on MTV's signature awards show a nostalgic fit.
The reported reunion comes during a big year for "TRL" alumni: the Backstreet Boys are celebrating 20 years together with new album "In a World Like This," while 'N Sync breakout star Justin Timberlake notched this year's best sales week so far with the blockbuster debut of "The 20/20 Experience." His follow-up album, "The 20/20 Experience Pt. 2," is due Sept. 30.
'N Sync remains the record-holder for one-week album sales, with 2000's "No Strings Attached" bowing with a staggering 2.4 million copies.