She avoids stores that clearly delineate their children's and women's sections. (Department stores -- a definate never.) Then she can uninterestedly wander by the display she needs, snag the jeans she fits, and flee to the women's dressing room. Safely behind the locked door, she checks buttons, rivets, for the give-away "kid's." At home, she rips off the white tag with its "Size 12."