(CNN) -- Italian fashion designers Domenico Dolce and Stefano Gabbana lost the appeal of their jail sentence for tax convictions in Italy, their lawyer said Wednesday. The men were sentenced to 18 months in prison by a lower court after being found guilty of failing to pay 40 million euros in taxes owed to the Italian government last year. They must also pay a 500,000 euro fine. The case will now be appealed to Italy's Supreme Court of Cassation, attorney Armando Simbari told CNN. The Dolce & Gabbana label is a popular brand on luxury clothing and accessories. CNN's Livia Borghese in Rome contributed to this report.
Domenico Dolce and Stefano Gabbana face 18 months in an Italian prison . The designers were found guilty of failing to pay 40 million euros in taxes in Italy . The case will be appeal to Italy's Supreme Court, their lawyer says .