Taylor Swift turned up courtside at the New York Knicks game and reminded everyone why she’s the queen of effortless off-duty style. The look? A pair of sleek, wide-leg jeans in a dark wash that hit that sweet spot between dressed up and totally relaxed. The wide-leg cut elongates the silhouette, making it a must for anyone trying to nail the ‘rich-girl’ aesthetic. It’s safe to assume Swift’s exact pair costs at least three figures, so we ran to…