The Pussycat Dolls offer to babysit for Britney Spears!

Those poor kids........

Pussycat Dolls singer Nicole Scherzinger says she can't wait to tour with Britney Spears next year.

"We've just been working on it for a long time," she said Friday on Ryan Seacrest's KIIS-FM radio show. "It's going to be a huge tour -- we just had to get on it. We're so excited!"

She says the Dolls have been pals with Spears for some time; the singer even shot a cameo for their video "When I Grow Up" earlier this year. (Spears' cameo was edited out of the final cut.)

Scherzinger said she is also looking forward to seeing Spears' boys, Sean Preston and Jayden James, on tour.

"The Pussycat Dolls can babysit Britney Spears' kids!" she told Seacrest.

That's the influence her kids need right now, Seacrest joked.

"Ryan, I hear that sarcasm!" Scherzinger shot back.

Spears' world tour -- her first in five years -- includes 27 cities and kicks off in her home state of Louisiana on March 3.