The stock's sell-off created a unique buying opportunity. But is it too late to buy?Lululemon Athletica (LULU +10.86%) stock has rebounded significantly recently, rising more than 20% over the last 30 days alone. That is a notable shift after shares slid earlier this year as cooling U.S. demand and a contracting profit margin spooked investors.With fresh data from the company's latest earnings report to mull over, it's a good time to take a look at the stock to see if shares look attractive. After all, even ...