Description from Knitty.com:

I love ribbon yarn. But except for a few scarf patterns I've come across, I rarely see good garment patterns that do ribbon yarn justice. While playing around with a few skeins that I bought for fun, I find that, in seed stitch, this wide and lightweight ribbon yarn knits up into a light stretchy textured fabric, just perfect for a spring/summer top.

It's also rare that you find yourself knitting warm-weather garments with size 11 needles. Despite using seed stitch all the way, this tank top knits up really quickly at 12 sts per 4 inches! So treat yourself or a lucky gal to this simple design that's not quite your ordinary tank.