A general rule of thumb: with designer stuff, most of the time, if it's logo-wear, it's fake. Â There are exceptions of course, like Versace and Gaultier.
I think that's a bad rule. Â Just look at D&G, Gucci (the belts, for instance), Prada Sport (at least the previous red stripe gear), Vuitton, or the female Dior stuff. Â They plaster their logos all over items other than handbags, although much less now than in previous seasons.
Point taken with D&G/etc., however in general by "logo-wear" I mean items with a large logo plastered across the front, like a Nike sweatshirt. The red Prada stripe may be no less obvious, but any piece of clothing with a big "GUCCI" or "PRADA" across the front is bound to be fake. Since this is a Men's Clothing forum, I cheerfully disregarded the female Dior stuff
It falls under my idea of logo-wear, but at least authentic pieces are cut to the point where the logo is mostly uninteresting. :O