Lululemon Athletica (LULU 0.59%) has risen up the ranks and successfully carved out a niche in the competitive apparel sector. Its shares have been a big winner, climbing 672% in the past decade (as of Dec. 12), a gain that beats the broad S&P 500.The consumer discretionary stock got a boost recently after management reported better-than-expected financial results for the third quarter. But shares still trade 23% below their all-time high.You might be considering adding a position in Lululemon. However, tak ...