ET exclusively sat down with the Maroon 5 frontman ahead of the band's big halftime performance.
The 'Harry' singer explained how she pulled off the astonishing hoax in a video posted to YouTube on Thursday.
The singer also reflected on Lady Gaga's decision to remove her collaboration with Kelly from streaming platforms.
The feuding rappers appeared to call a truce last October.
ET is taking a look at when we first met the Maroon 5 frontman ahead of the band's big performance, airing Sunday, Feb. 3, on CBS.
The music video debuted on Jan. 29 and has almost 4 million views.
Only ET sat down with the Maroon 5 frontman ahead of the band's big performance.
Aguilera and Lovato collaborated on the single 'Fall in Line,' which is currently nominated for a GRAMMY.
The rapper adds a new flavor to the Backstreet Boys classic, 'I Want It That Way.'
The 16-show residency will kick off on May 31 and continue with performances in June, September and October.
The GRAMMY-winning artist also reveals which singers she's going to for advice.
'Christina Aguilera: The Xperience' launches May 31 at the Zappos Theater inside the Planet Hollywood Resort & Casino in Las Vegas.
"He’s like, ‘Dude, your album. I listened to it the entire season.’"
The pop icon is making her way to Sin City.
