Cast on, kill off / Maggie Sefton.

Enhanced descriptions from Syndetics:

Wedding bells are ringing in Fort Connor, Colorado, and the House of Lambspun knitters are abuzz with excitement. But when a murder interrupts the wedding planning, Kelly Flynn will have to solve this crime fast to ensure the killer doesn't wind up on the guest list...

Kelly Flynn's knitting pal, Megan, is about to get hitched, and all the planning is falling into place. Megan has found the perfect seamstress, Zoe Yeager, to create the dresses for Kelly and the other bridesmaids. And each bridesmaid is knitting her own loose-knit shawl to drape over the lovely dresses. But Zoe has more than bolts of fabric and seam-cutters stashed away in her shop--she's harboring a secret. Bruises on her face show a troubling side of her marriage, and just after she finds the courage to leave her husband, Zoe's found dead from a single bullet shot.

Though her husband is a key suspect, it turns out there are others who might have had designs on Zoe's death. One is fellow seamstress Leann O'Hara, who recently discovered Zoe won a bridal gown design contest with one of Leann's own designs. Now it's up to Kelly and her knitting pals to use their sleuthing savvy to solve the case, while helping Megan stay cool and collected as the big day approaches. They'll have to stitch up all the loose ends before they can don their dresses and shawls and escort Megan into the land of happily ever after...