Lacy Back Cardigan
This feminine little cardigan is made by first crocheting the lace back then picking up stitches to complete the back and knitting the rest of the sweater and sewing it all together. The button band is knit at the end and sewn on. The crochet back is the trickiest part of this sweater, the knitting is pretty basic.
There is a tutorial to assist with the back of the sweater here.