Victoria & Albert Museum, London By submerging Botticelli and his Venus in the trashy pool of pop and tourist culture they have inspired, this landmark show elevates them both A dolce and Gabbana dress covered with prints of Botticelli’s Birth of Venus, a clip of Uma Thurman emerging from a shell in The Adventures of Baron Munchhausen, graffiti art, Bulgari, a golden Italian racing car wheel that quotes a Botticelli brooch. I have wandered into some wonderland suspended between beauty and kitsch, where the Renaissance has morphed into trashy pop culture. One version of The Birth of Venus, by Vik Muniz, is literally made of trash, an assemblage of junk…