BROOKLYN - As of yesterday, shoppers in Brooklyn and throughout New York City can once again enjoy buying clothes and footwear under $55 tax-free.Before April 1, shoppers were forced to pay sales tax on all items, but now they get to save nearly 9 percent, combined with the city's sales tax exemption already in place for purchases of $110 or less. "Customers look for any kind of incentive or any kind of help in making purchases, so even though it's just $55, it make a difference," says Dana Ottey, the owner of "AweDacity" store.Small business owners say the tax exemption could help boost the local economy.Come April 1, 2012, state law makers say they're going to increase the cap, which means there will be no state sales tax on clothing and shoe items under $110.