Young Brunette Girl With The Pink Corselette

A corselet was released by Warner's in 1955, named after The Merry Widow, a 1905 operetta that has been adapted several times into feature-length films. This new design featured demi-cups and a shorter girdle than its predecessors. This type of lingerie is also known as a torsolette, and is used in bridal lingerie, much like the bustier.
The original merry widow was a corselet incorporating slim panels of black, elastic yarn netting. A heavy-duty zipper was inserted behind a velvet-backed hook-and-eye flange, and the entire garment was lined with nylon voile. Nine long, spiral wires were encased in black satin.
Lana Turner is reported to have said, "I am telling you, the merry widow was designed by a man. A woman would never do that to another woman."
"Merry widow" is the generic term for a corselet bra in the United States.