The pair took out a full-page ad on Saturday in Italian dailies expressing frustration with "insults" aimed at them.
The last straw, they said, were remarks by a city official who said tax evaders should not be allowed to use prominent city spaces.
Dolce and Gabbana were found guilty last month of failing to declare $268m through a Luxembourg company. They deny the charges and plan to appeal.
The duo's Dolce&Gabbana label got its start in Milan 30 years ago. Gabbana said on Twitter that they never asked to use city spaces.
The stores reopen on Monday.