A laundry list of top-notch designers — the names above, plus Balmain, Calvin Klein, Christopher Kane, Prada, Rodarte, and Rick Owens — have lent their skills to designing tees, in honor of Style.com's 10th anniversary. For $45 a pop, you can sport a tee with the Roman numeral X on it, each with the designer's unique take. They're limited-edition, and only 400 of each style have been produced, so shop fast!

(Top L-R: Alexander Wang, Lanvin. Bottom L-R: Givenchy, Proenza Schouler)