Our trendy friends at Refinery29.com have been covering New York Fashion Week, which just ended yesterday. Here, they cover the most interesting (and surprising) nail trends for Spring 2011. Some incorporate science-y tatics, like these “flesh extension” nails, pictured above. Would you ever try them? As you might have seen, our sartorial-stalking skills are on point (to wit: lust-worthy shoes galore!). Today we train our scopes on all the coolest nails out there at the shows and on the streets this Fashion Week. From backstage to the runways, we’ve spied some mega-amazing manis—and we’re not just talking nail art.Spring has ordered up an abundance of ways to get your lacquer on—both in terms of heart-stopping designs and gorgeous, single-hued shades—mixing can’t fail classics with super-cool, inspiring artistry that really nails it. Here’s to getting a perfect ten.1. Cushnie et Ochs:Engineered by Dashing Diva’s Pattie Yankee, these super-pointy, “flesh-extension” nails (seen above) are comprised of Dashing Diva’s Mr. Right polish mixed with mineral makeup to match each model’s skin tone. The idea is that they visually lengthen the finger tips, just like nude shoes make your legs look longer. What do you think?Click over to Refinery29.com to see the rest of the trends.