On my early trips to London and Paris, in 2009, I started to shift to more wide-brimmed felt hats similar to Borsalinos and Stetsons. Theophilus London
Atticus wore a baseball cap while Rosie wore a wide-brimmed hat to shield her face from the sun. Source: Internet
A wide-brimmed hat, lip balm with sunscreen, and sunglasses are excellent choices, as well. Source: Internet
Many, furthermore, wear huge wide-brimmed straw hats, some of which could have graced the streets of Paris 80 years ago. Source: Internet
There were cat-head mugs and wide-brimmed hats with knit Persians curled on their brims and museum-sized oil paintings of cats lounging in the branches of an oak tree. Source: Internet
Avoid sun exposure - shade yourself by wearing a wide-brimmed, breathable hat or using an umbrella. Source: Internet