As long as your blazer dress is long enough to graze your fingertips (i.e. doesn't actually look like you forgot pants), it's a yes in my book. Shop for more demure colors, like black, red ...
And, all winter blazers can be layered with essentials like tank tops, tissue tees, long-sleeved shirts, and cotton poplin button-downs. Because the blazer has cemented itself as a year-round ...