The tops carried slogans in German and Polish that translate as Jews forbidden from entering the park .
They were reproduced from Nazi signs from 1940 that targeted the Jewish community in the Polish town of Lodz.
Some 95% of more than 200,000 Jewish people there would die in concentration camps during World War II.
The sales assistant at the Parisian store, in the Belleville district, said one person had bought five of the grey, sleeveless garments for about 18 euros $27 each.
She said she did not understand what the inscription meant.
The neighbourhood of Belleville in eastern Paris has been the site of ongoing scuffles between groups of Jewish youngsters and youths of North African origin.
France has one of the largest Jewish communities outside Israel, numbering about half a million people.
