Tweed Run which I'm totally fond of at the moment. I would so much like to take part in that event where hundreds of cyclists in stylish clothes are riding through the city and having a nice tea break at some time. It takes place in London on the 6th of May and in many other cities during the year. But unfortunately there's nothing next to my hometown.
Make sure to check out the Tweed Run sites of the big cities all over the world. There you can enjoy such great photos of well-dressed people.
Have a colourful day!