Cherry red skinny jeans make for a colorful twist on off-duty model staples: a menswear button-down and a luxe bag.

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If you're a "Project Runway" fan, you've likely paid attention when the models come in for a fitting. There seems to be an almost uniform-quality to their off-duty clothing in that ultracasual setting. Even snapped on the streets of New York during Fashion Week there are items you'll see repeated, if styled with a bit more flair.

The overall look tends toward casually fashionable, often downright comfortable and, as we set forth here, within the regular woman's rip-off abilities.

So let's start by taking a look at the clothing and accessories that appear to be in many models' go-to wardrobes, and how they like to wear them. These are, for the most part, pretty standard pieces that may be hanging in your closet as we speak; and if they're not, most can be purchased relatively cheaply ...