Britney Spears joins James Corden in Carpool Karaoke

LOS ANGELES, Aug. 26 (UPI) -- Pop royalty Britney Spears and The Late Late Show host James Corden drove around L.A. singing some of Spears' biggest hits for Corden's ever-popular Carpool Karaoke segment -- including Spears' most iconic song, 1998's "...Baby One More Time," complete with school girl uniforms.

Spears and Corden sang along to a few of Spears' most popular songs, belting it out to "Womanizer," "Toxic," and "Oops, I Did It Again," which, Spears admitted, she had no clue what it was about.

"I don't know," she said when Corden asked what the song's lyrics meant. "I think it's just a song."

Corden offered his thoughts, saying the phrase comes to mind for him every time he orders a pizza.

Spears also told Corden that she'd love to have more children -- three more to be exact -- but that she'd have to "find the right guy first."

Corden wondered how Spears' two children -- aged 9 and 10 -- react to seeing her perform in racy outfits as part of her long-running Vegas show.

Spears said her kids are pretty used to it.

"I feel like they know it's mommy performing," she said.

Corden joked with Spears that he saw his own mother in her underwear once and said he can't "shake the image" out of his head.

The two ended the car ride with another rendition of "...Baby One More Time," but this time clad in the iconic white button down and gray cardigan from the music video. Corden even rocked a pigtail wig, complete with fluffy pink hair clips.

Spears will be performing at the MTV Video Music Awards on Sunday, August 28 -- her first time on that stage since 2007.

In other big news for Spears, her ninth studio album, Glory, debuted on Friday -- her first album since 2013's Britney Jean.