Second guessing this, 50's or 60's the embroidered patches look 50's I had to cut out the bullet bra, it was leaking powder everywhere. I didn't want to but I had to.
It has to be '60s because of the Union Label. If it didn't have the label, I would have guessed '50s from the suit. This label was used from 1963-1974. The lifeguard patches probably didn't change that much. https://vintagefashionguild.org/label-resource/union-label/ Too bad about the bra - but it still appears to be in excellent condition. Fun find!