NEW YORK ( TheStreet) -- While many investors have made bullish bets that the retail sector will continue to outperform, the recent sales data would suggest somewhat of a disappointment. TheStreet's Brittany Umar and Laurie Kulikowski take a look at the results.Kulikowski said that retail sales figures have been mixed so far for July. While not every company has reported, investors were disappointed by Costco Wholesale ( COST), but surprised by L Brands ( LTD). She added that The Gap ( GPS), which reports after the close on Friday, would be a strong tell for retail. Many companies no longer report monthly retail sales figures. Names like Macy's ( M), Wal-Mart ( WMT) and Kohl's ( KSS) have all shifted to quarterly reporting. However, according to Kulikowski, the big story isn't just retail, but more specifically, teen retail. After American Eagle Outfitters ( AEO) slashed its profit outlook, Aeropostale ( ARO) followed up with disappointing sales figure. The Buckle ( BKE) and Zumiez ( ZUMZ) have also said they're feeling the pressure as well. All of this has certainly dampened the back-to-school hype on Wall Street, Kulikowski concluded, as she now expects it to be disappointing.