Carrie Underwood's bathing suit while filming 'American Idol' has caught the attention of fans who love how cute and modest ...

Earlier this week, the former Counting On star, 29, looked cute and confident modeling swimsuits from what looks to be her backyard in an Instagram post sponsored by modest brand ModLi.

This stylish swimsuit list spans across styles ... This all-black two-piece is fun and flirty, but it has a modest top with a cute tie string and ruffle hem and full-coverage, high-waist bottoms!