Dolce and Gabana are officially billionaires. This news comes on the heels of Amancio Ortega, the owner of Zara, becoming richer than Warren Buffett and thus the third richest person in the world. The Milan based billionaires now join the elite list of 10 figure net worth individuals. Their fortunes seem to rise, just like Zara, as the economy improves and more and more people are becoming increasingly fashion conscious. May be the internet is partly responsible for making fashion trends and therefore select fashion retailers more trendy or desirable. It seems that in the years ahead, we’ll see a lot of winners and a few losers. As the market…