Loose fitting, deep V-neck jumpers - bit slouchy (Uniqlo)
or cropped length sweat shirt (h&m)
or cropped length, boxy shape plaid shirt (h&m) over a long T
or sometimes a Mad Mannish buttoned up cardi which breaks the fitted-on-the-bottom-half-looser-on-the-top rule but hey, I like it.
Always slouchy, bikerish ankle boots.