Oftentimes, I read fashion advice saying that people who want to look taller/thinner should dress in a long, unbroken line, i.e., tonal/monochromatic. But as I read more fashion blogs, I find lots of people saying they steered away from certain looks as too "matchy-matchy" and swapping out not simply accessories like purses and scarves but also shoes, tights, or tops or bottoms. Which works well on some of the size 0/2 bloggers out there, but I have no idea how to do this without visually chopping up my 5'3", short-legged, could-stand-to-lose-a-few-pounds body, or without spending vast amounts of money to update my almost-all-black shoe/bag collection (I've only just branched out into colored scarves).

So I'm turning to you to ask what you think. What does it mean to be too "matchy-matchy"? Is monochrome out, and am I hopelessly out of date for even asking? How am I supposed to achieve that long unbroken line while staying in style?