Adele Cardigan | crochet pattern by Jenny King (link to Ravelry) Lace wrap cardigan in sizes 10 - 18, can be wrapped and tied in different ways (back, side, or front). Note: written in UK crochet terminology.
Alexandrium Cardigan | crochet pattern by Sara Delaney. Bottom up, seamless raglan with vertically worked lace detail. Could be done in a solid color, with just a contrast color border on the front. Sizes up to 52" bust.
Learn Plus-Size Crochet Techniques with Marly Bird | On
Curvy Crochet class on Craftsy.com with Marly Bird "Learn how to make beautiful crocheted garments that fit right and look great. Plus-sized or petite, you'll learn lots of useful techniques." This is a great class no matter what your size - if you want to learn how to make a crochet garment that really fits YOU, this is good stuff!
Lakota Bird crochet cardigan pattern by Marlaina "Marly" Bird | bust size up to 58" with 2" of ease, lace pattern creates vertical lines, buttons in the back can be used to pull in and shape the cardigan.
Lucine Tunic crochet pattern instructions by Robyn Chachula. Published in Interweave Crochet Spring 2010 and also available as a PDF download via interweavecrochet.com. Sizes up to 50" bust. Fastens under the bust and skims over the torso; sleeves are generously sized.
Trellis Vest in Fall 2012 issue of Interweave Crochet, by Kristen TenDyke. Sizes up to 60" bust, with positive ease. Nice layering piece with waist-defining shape, great over a tank top or camisole when the weather is just a bit cool.
Jessica Tromp's tutorials for making your own crochet bolero are a good starting point; you will be able to design a bolero made to your measurements. Please note that these are not straightforward "plug-and-play" patterns in the way a lot of North Americans are used to.
479 Nakota Cardigan, crochet pattern instructions by Sara Delaney. Available on WEBS as print, PDF, or in a kit. Sizes up to 50" bustline. Would be a great everyday layering piece done in a solid color; stripe colors could be changed to coordinate with your own wardrobe.