It’ll be a blue Christmas without you, Shania. Nobody’ll be getting a new Twain set for the holidays, now that the country-pop thrush’s long-anticipated Christmas album has been pushed back at least a year. But at least there’ll be one navel-baring superstar giving retailers a feliz Navidad: Christina Aguilera. Just a month after she releases a Spanish-language effort, the teen genie will issue her third album, My Kind of Christmas (10/24). Aguilera had the top-selling Christmas single last year with her version of ”The Christmas Song.” No. 2 was ”Deck the Halls” from the hot female country trio Shedaisy. And they, too, have gone on to cut an album (due 9/26) to complement their ’99 hit. Also on the country front, 12-year-old Billy Gilman has readied Classic Christmas for his second album (10/17). Linda Ronstadt, on the other hand, waited a few decades before making her holiday debut (10/10), covering Joni Mitchell’s semi-seasonal ”River” amid the hymns. Also standing more than a snowball in hell’s chances of perking interest are holiday packages from R&B/gospel upstart Yolanda Adams (10/10) and Southern men Lynyrd Skynyrd (9/12). If the thought of a Skynyrd Christmas leaves you a little frosty, Rosie O’Donnell’s second annual karaoke-fest, Another Rosie Christmas (10/24), finds the chat-show host dueting with the Dixie Chicks, Jewel, Ricky Martin, Macy Gray, Jessica Simpson, Marc Anthony, and Destiny’s Child.