Katie Holmes bob hair black shirtdanceMrs. Tom Cruise has been mighty busy lately, and not just with that "Purification Rundown" diet!

Katie's been seen taking meetings (and taking Suri) all over town lately, and Saturday we caught the Denim Diva at a dance studio!

Is she gearing up for another song and dance number like the one she did on Eli Stone?

Oh, and where's Tom?