What to wear to Tomorrowland: Boom sits at 24°C (75°F) by day and 14°C (57°F) at night in July, on open field, with a moderate chance of rain. That means a light base with one warm layer you can carry, broken-in boots or sturdy trainers, and a bag small enough for the gate rules. The crowd leans rave, fantasy and costume, so a full costume is the norm rather than the exception.
Tomorrowland takes place in Boom, Antwerp, Belgium, usually in July, Belgian summer. It is one of the largest festivals in the world (around 400,000 people), running 3 days across open field with camping on site.
The most theatrical dance festival on earth, and the crowd dresses to match the stage build: colour, sparkle, wings, flags and a full outfit change between weekends. Two weekends, 400.000 people, every nationality photographing every look.
Days sit around 24°C (75°F) and nights fall to 14°C (57°F), a 10-degree swing that most first-timers underestimate. Rain is a realistic possibility on at least one day.
Below: the 10 outfits that work best at Tomorrowland, what the crowd actually wears, and the practical rules, bag size, footwear, night layers. That decide whether the outfit survives the weekend.