For all of our non-sewers and sewers alike, here is a DIY caftan you can make without sewing skills. Caftans are free-flowing long tunics that originated in the middle east centuries ago. They have re-emerged throughout fashion history many times, most notably in the late 60's-early 70's (think Mrs. Roper and Maude). I, myself, LOVE a modern day caftan for lounging, relaxing, or accessorizing and wearing out.
Sewers can sew instead of use the tape I show, and feel free to play with different fabrics and the depth of your slits and arm holes. Really light, airy fabrics or silk give a really sexy look.