Bristol Palin, Kelly Osbourne, and Lance Bass Credit: Eugene Gologursky/; James Devaney/; Michael Tran/FilmMagic

Don't wait by the phone, Kate Gosselin!

Dancing With the Stars producers are rounding up only the best and the brightest for their first-ever all-star edition.

On their list? Melissa Rycroft, Gilles Marini, Bristol Palin, Kyle Massey, Chelsea Kane, Lance Bass, Kelly Osbourne and Mario Lopez--all of whom vied for the Mirror Ball on the ABC hit.

"This past season was kind of dull," an insider says of the series, which premiered to all-time-low ratings in March. "They realized they need to get people excited again."

There's just one last hurdle to clear before the fall premiere: availability! "It's a lot of work figuring out schedules," says the source, "but producers are determined to give viewers the people they rooted for."