Ute Rehner, a Facebook user and a member of the Heute Strick Ich Faceboook community page, decided one afternoon that she needed something to wear for an evening appointment. She took a plain charcoal gray jersey top and a single skein of Rowan Kidsilk Haze Glamour, and set to work, knitting a collar and cuffs, cutting away part of the original neckline and sleeves from her shirt, and then pinning and stitching the knitted ones in place, all in the space of three hours. The result looks wonderful — you can see more pictures and Rehner's narrative on here.
This is definitely a great idea for making a lovely little top that can be worn almost anywhere, will flatter most women, and that isn't going to take much time or money. But if I try it, I'll be allowing myself more than three hours of leeway for the job. I have never found that knitting and tight deadlines marry well.