This year, instead of lying to poor old granny about wearing that hideous sweater she bought you for the holidays, come to the Holiday Hoedown and get some real wear out of it while supporting Petaluma’s COTS program. Arann Harris and the Farm Band present the accompanying Ugly Sweater Contest, which is sure to draw in fashion the connoisseurs of the world. Break out that Huxtable-style sweater and rock to the upbeat sounds of openers the California Honeydrops and the Barbary Ghosts on Sunday, Dec. 18, at the Mystic Theater. 23 Petaluma Blvd., Petaluma. 6pm. $10 with can of food; $15 without. 707.765.2121.