This year's crop of celebrity hoofers on 'Dancing With the Stars' have stayed so close since the end of season 10 that they're even planning a big reunion dinner in Los Angeles in three weeks. All were invited, save for one: Kate Gosselin.

"Her invite must have gotten lost in the mail," one 'Dancing' insider tells me. "Of course she was not invited! We all became close during and after the show except Kate who hasn't returned anyone's calls or emails. You know it's bad when even creepy bachelor, Jake Pavelka, gets invited but she doesn't."