Inner layer appears to be Taffeta (or something similar) covered in 2 layers of tulle, with the outer layer being ruffles. One of the wire molds in the chest had pulled away from the fabric in one area, but should still stay in place while worn. You'll also see that the tulle is ripped in one spot below the zipper.
Measurements: Armpit to armpit flat across: 14.25" Armpit to waist (this dress is empire waist): 7.75" Waist flat across (again remember empire waist): 13" Total length from armpit to bottom: 53". The item "Vintage 1950s Strapless Full Skirt Chiffon Ruffle Prom Party Dress Yellow" is in sale since Friday, February 26, 2021. This item is in the category "Clothing, Shoes & Accessories\Specialty\Vintage\Women's Vintage Clothing\Dresses".tara" and is located in Lansing, Michigan. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Russian federation.