Emmanuel Macron has blasted 'extraordinarily rude' Brazil leader Jair Bolsonaro for insulting his wife and appearing to criticise her looks as their feud over the Amazon fires got personal today.

Bolsonaro endorsed a sexist Facebook post about France's 66-year-old first lady Brigitte Macron yesterday, the latest chapter in an escalating war of words between him and his French counterpart over the Amazon crisis.

French President Macron, 41, had called for emergency talks by G7 nations on the fires destroying chunks of the Amazon rainforest, piling pressure on Bolsonaro, who in turn accused him of having a 'colonialist mentality'.