Thousands and thousands of Pitbull fans dressed up for his London shows this week wearing bald caps, a white shirt, black tie and drawn-on facial hair, before swarming to the city’s O2 Arena.

“There were 305 entries this year,” she said. ”Black and White Days has been going for 110 years and is the is the longest running Holstein show in the country, so it’s a big deal.” On Tuesday, Cole ...