Britney Spears wants to have three more children.

The 34-year-old singer is mother to 10-year-old Sean and nine-year-old Jayden with ex-husband Kevin Federline. But while she doesn't have a man in her life right now, Britney foresees a bigger family in her future.

Toxic star Britney made the admission during her appearance on James Corden's Carpool Karaoke on Thursday night (25Aug16), telling the host she is "so jealous" of him having two little ones.

"Mine are nine and 10, they're not babies anymore!" Britney exclaimed. "I want more, I would like to have like three more.

I have to find the right guy first, and then… you know."

She then burst into an impromptu rendition of Ace of Base's song All That She Wants (is another baby).

Britney has been married twice before - a 55-hour union with childhood friend Jason Alexander following a Vegas wedding, and to dancer Kevin from 2004 to 2007.

She was also engaged to Jason Trawick and was reportedly set to wed ex-boyfriend Charlie Ebersol, but told James she won't walk down the aisle again.

"I think I might not do the whole men thing anymore. I won’t do the men thing, or get married, I’m just done with men," she vowed. "I might french kiss someone but i’m not going to marry anyone - I don’t believe in marriage any more."

Britney and James belted out her songs Oops!... I Did It Again, Toxic and her biggest hit Baby One More Time, for which the duo donned school uniforms to recreate the infamous video for the track, with James even sporting a blonde, plaited wig.

Britney's appearance on the Late Late Show's Carpool Karaoke comes amid a busy week for the star. On Friday morning (26Aug16), the singer released her ninth studio album Glory and tweeted her excitement by writing: "It’s here!!! #GloryOutNow."

The hashtag is just one of those that will trigger the use of a specially created Britney emoji, which shows a close-up cartoon version of the singer's face. Among others that will cause the emoji to feature are #BritneyCarpool, #BritneyonCorden and

#BritneyCarpoolKaraoke.

Britney is also capitalising on her upcoming performance at Sunday night's (28Aug16) MTV Video Music Awards, with the hashtags #BritneyVMAs and #BritneyOnVMAs also triggering the emoji.