FORT WORTH (CBSDFW.COM) — Tax-free weekend in Texas is officially here, and shoppers are already taking advantage of the annual sales tax holiday.Friday was a busy day at Tanger Outlets Fort Worth, with many families out crossing items off their back-to-school shopping lists."The top of our list is shoes and a first day of school outfit," said Erin Nichols, who was there to shop for her five kids. "That's our goal."From now through Sunday, state law exempts sales tax on qualified items priced under $100, which includes most clothing, shoes, school supplies, and backpacks."I wasn't super excited because it's always super...