Major Russian banks have relaxed their strict staff dress codes as the capital enters its fourth week of a heatwave that has broken a 29-year record. Men have been allowed to ditch their jackets and ties, while female employees can now show bare arms and toes, said bankers at no. 1 lender Sberbank , as well as VTB and Uralsib. But some banks sent out internal memos to say they drew the line at mini-skirts, shorts and gym clothes, Reuters quoted bankers as saying. Temperatures in Moscow hit 35 degrees Celsius (95 Fahrenheit) on Thursday for the first time since 1981, as the heatwave that has destroyed Russian crops and caused a massive drought surges on with no end in sight. Russians have been amazed by the high temperatures which have affected much of the country. Many retailers have sold out of air conditioners while the capital's small patches of green are filled with bikini-clad women and shirtless men.