http://www.ebay.com/itm/271870354708
This vintage swimsuit was made in the late 1940s. These day-glo trunks enjoyed brief popularity around 1947-1949.

Waist (unstretched): 14-1/2″ (doubled – 29″)
Waist (stretched): 18″ (doubled = 36″)
Side Seam: 12-1/2″
Inseam: 1-3/4″