This lot includes three vintage bras. 

THE FIRST
Pink Allo Maiden Form bra with pleated front bridge and cups, pink satin straps, and adjustable hook and eye closure. Patented in 1937. 
Label: Allo / Maiden Form
Size Label: 38 / 39
Style/Serial No.: 6300
Mary D. Doering Archive No.: N/A

Approximate Measurements:
Shoulders: 13.5"
Chest: 37.5"

THE SECOND
White Formfit bra with quilted lace and cotton cups, elasticized bridge, and adjustable straps and back hook and eye closures.
Label: Formfit / Romance / Made in U.S.A. 
Size Label: B 34
Style/Serial No.: 507
Mary D. Doering Archive No.: N/A

Approximate Measurements:
Shoulders: 13.25"
Chest: 34"

THE THIRD
White net machine made lace brassiere with adjustable elasticized straps, net and lace bands, bust enhancement padding that can be placed in one of two pockets on the inside of each cup, and adjustable hook and eye closure. 
Label: Frederick's of Hollywood
Size Label: 38D
Style/Serial No.: 5452
Mary D. Doering Archive No.: N/A

Approximate Measurements:
Shoulders: 14"
Chest: 38"