My wife was much the same way. She'd pretend to be reluctant to tease in public and yet was so easily coaxed into it. Her only rule was these "adventures" had to take place far enough away from home that the odds of meeting anyone we'd know was extremely remote. At first it was short skirts or dresses, low cut tops etc. while shopping or in bars/restaurants. Soon enough she agreed to abandon the wearing of bras and panties, and on holidays far from home she was comfortable flashing at parks, roadside rest stops, beaches.