Backless one-piece suits were the new thing! Skirts had now been hiked to the top of the thighs but necklines were still quite high and few had dared to think of a bare midriff.
The first really slinky bathing suit was the maillot, borrowed from the Riviera. Police had to control crowds when it was first displayed in a window in New York. It was skin-tight all over and cut very low in back.
This was an adaptation of the maillot. It consisted of a discreet halter fitting into separate pants. The bust was still not shaped. This conservative halter and pants paved the way for the two-piece bra and pants combination.