Wonderful! Glad to hear you are excited, Joy. That AT 2-piece peplum sounds marvelous, annoying that you can't go try it on in a store.
I've been thinking some more. Would a short poncho sweater (like the blue Esprit one below) layered over a flowy (tank) top work? Or a drapey sweater like the ink Eileen Fisher one? (I have this sweater and it's so soft and fab.)
I also really like the look of a cardigan worn as a sweater (so buttoned up all the way). Could be fun in warmer weather when you are in the mood for a pullover and want something lightweight. The grey COS one is extra fun because of the drapey neck, the beautiful drape and the asymmetrical detail, but a regular crewneck cardigan will also work (think solid colours, but also colour block, embellishments, patterns, lace, mixed media...). I'm adding some examples below.
Oh, and there's also the fitted denim jacket worn as a top, of course. Love that look too!
http://youlookfab.com/2015/02/.....rry-style/