A Utah woman charged with a crime after her stepchildren saw her topless in her own home…is fighting the case that could force her to register as a sex offender, pointing to a court ruling that overturned a topless ban in Colorado. Prosecutors counter that nudity is commonly understood to include women’s breasts…and that courts have upheld laws based on morality. But Tili Buchanan’s attorneys argue that Utah’s law on lewdness involving a child is unfair because it treats men and women differently for baring their chests. They are asking a judge to overturn her misdemeanor charges and declare that part of the law unconstitutional.