Japanese retailer Uniqlo will open 10 new U.S. stores over the next two months in New York, New Jersey, Connecticut and Northern California, and wants to expand with 20 more in 2014. But first, it needs to figure out Los Angeles. "Southern California is a very important market to us, and it's a priority market to us," said the company's COO. "We will think through the specific strategy for L.A., but right now, we're studying it. Do we open multiple stores right away versus have a flagship and wait a year to open up the suburban areas?"