Gymboree Corp. announced July 11 that it is closing 350 stores, including three in Plano at Collin Creek Mall, 811 N. Central Expressway; at the Shops at Willow Bend, 6121 W. Park Blvd.; and at Preston Park Village, 1900 Preston Road, Ste. 209. The children’s clothing retailer is restructuring under bankruptcy law.