Kate says she'll be practicing her moves in a newly-converted dance studio in the basement of her home -- so she can be close to her kids. And a source tells us "Dancing with the Stars" is footing the bill for the makeshift studio.
Kate's dancing partner, Tony Dovolani, will go to Kate's home for practice.
Kate, we're told, will only be in L.A. two days a week, for the taping. When she's in La La Land, her kids will stay in PA with a nanny.
Our source says Kate told the "Dancing" folks, she's doing the show "because she's a single mom trying to make money."