Image courtesy of Flickr If you’ve received piles of catalogues and endless emails from retailers promoting the latest clothing sales for fall and winter, you’re probably trying to assess the real deals from the duds. With back-to-school spending expected to reach $74.9 billion this year, stores are clamoring for their share of consumer dollars by releasing many alluring specials. So while discounts on everything from denim to sneakers to sweaters are tempting, jumping on every offer that comes your way will ultimately lead to overspending. To avoid blowing your shopping budget, study these seven lessons on cutting kid’s clothing costs without sacrificing style or quality.   1. Audit your kids’ closets. Before buying…