1070 Madison Ave., near 81st St.
Even when you're wading into the kiddie pool to give junior his first snorkeling lesson, you want to make an impression. This Upper East Side fixture has suits that are vivid and masculine ($84).
621 Madison Ave., near 58th St.
98 Wooster St.
For rated-G swimsuits that don't look like they came from a catalogue, this swank French import specializes in classic cuts and colors, all in the silkiest Lycra ($155-$330).
SHYMA PATEL AND MARION MENAKER
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