Not quite. In 2022, the city of Grenoble passed a law which allowed women to wear their bathing suit of choice rating than mandating a specific style of dress.

In 2025 there was been a successful court challenge which forces the law be retracted and to be brought back in line with national regulations. On the basis that the rule change was made to accomidate a religious group, which I guess is illegal in France.

In France you are not allowed to wear loose or long swimwear in pools for "hygiene". It is also banned for men to wear boardshorts. They have to wear speedo style garments.