Shoe Pavilion Inc. said Thursday that its comparable store sales increased 3.9 percent for the second quarter ended July 1 vs. the comparable period a year ago. The Sherman Oaks-based off-price shoe retailer said sales at all stores rose 26 percent to $31.4 million, compared to $24.4 million for the like period a year ago. Shoe Pavilion plans to open 20 stores in 2006.