Christina Aguilera's manager says she hasn't peaked yet, unlike Britney Spears and Jennifer Lopez.

Christina Aguilera

Christina Aguilera

When asked if 'The Voice' coach would consider a Las Vegas residency like the other popstars, Irving Azoff said that it was only for stars who are no longer in their prime.

Speaking on Pauly Shore's podcast, he said: "No disrespect to Britney, or to Jennifer Lopez, who's doing [a residency], and Shania [Twain], who did one, but Christina's not peaked yet. She's in the prime of the career.

"[Christina's] about to go back on 'The Voice', about to finish a record, about to do another guest shot on 'Nashville', and the record's amazing.

"She's never happier and never done better."

While Britney recently extended her Las Vegas residency at Planet Hollywood for a further two years, Jennifer will kick off hers at the venue in 2016.

She said: "People keep asking me what the show is going to be like and what I'm going to do. We're still figuring that out. But I do know one thing, I want to share something with you right now.

"I know no matter what the show is, what I'm going to do, every single night, whoever comes, I will be giving you all I have. It's going to be a fantastic show and I can't wait to see all of you there."