A while ago, I fell in love with Sfgirlbybay's folding vanity mirror (seen here and here), which I suspect she may have picked up at a flea market. I have since been on the hunt for a triptych vanity mirror, but I've not yet made the final splurge. I've come across several options that fit the bill and that I have mixed feelings about, because a part of me is still holding out for an antique one. I think all three are wonderful choices, if you can afford them. It often surprises me how expensive mirrors can be, though. To see the three choices I've come up with, read more.
Good: The Restoration Hardware Triptych Tabletop Mirror ($99) is comprised of three beveled-edge mirrors, framed in nickel-plated brass. In full, it measures 28" by 11", so it's fairly portable. But I don't know why it would need to be "ported." I like the shape of it and its simplicity. However, I'm not keen on the frame; it's a bit industrial for my tastes. Funny thing: The dish in front of it resembles the one in Sfgirlbybay's photo (not that it matters).
Better: The Anthropologie Etched Triptych Mirror ($228) is beautifully etched and more ornate and girly than the first. I worry, though, that this type of "faux" Venetian mirror is a trend that will lose its appeal. And at that price, you could probably afford a real Venetian glass mirror. Measuring 30" by 37", it's pretty large and joined at each end to sit easily on your vanity.
Best: The Graham and Green Deco-Style Bevelled Triptych Mirror ($468) is awesome. Like the first, it's also beveled, but its bronze tint and chunky samba-wood frame give it an Art Deco feel that's just plain kewl. It's also large (25" by 42"), which makes it easy to actually see your whole face, you know, if you needed to. The drawbacks here are that it's both expensive and sold from the UK, which will probably require a lofty shipping fee.