If you're one of the many lunatic fans running around FIFA's World Cup, a simple T-shirt bearing your country's flag across the chest just doesn't cut it. (You might as well show up wearing a suit and carrying a briefcase.)

Instead, face paint, boas and other country-specific trinkets mix together into increasingly bizarre costumes in an apparent effort to blur the line between die-hard fan and wandering lunatic.

It's for this reason that we compiled a gallery of our favorite superfluous and straight-up weird fan outfits from the World Cup.
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Craziest World Cup Outfits

A Japan fan cheers prior to the World Cup round of 16 soccer match between Paraguay and Japan at the Loftus Versfeld Stadium in Pretoria, South Africa, Tuesday, June 29, 2010.

Craziest World Cup Outfits

PRETORIA, SOUTH AFRICA - JUNE 29: A football fan enjoys the atmosphere prior to the 2010 FIFA World Cup South Africa Round of Sixteen match between Paraguay and Japan at Loftus Versfeld Stadium on June 29, 2010 in Pretoria, South Africa.

Craziest World Cup Outfits

A Brazilian fan celebrates the first goal of the team as he watches the FIFA World Cup South Africa 2010 football match between Brazil and Chile in Copacabana Beach, in Rio de Janeiro, Brazil on June 28, 2010.

Craziest World Cup Outfits

JOHANNESBURG, SOUTH AFRICA - JUNE 28: Brazil fans enjoy the atmosphere prior to the 2010 FIFA World Cup South Africa Round of Sixteen match between Brazil and Chile at Ellis Park Stadium on June 28, 2010 in Johannesburg, South Africa.

Craziest World Cup Outfits

Action photo of fans, during game of the 2010 World Cup held at the Loftus Versfeld of Pretoria, South Africa.

Craziest World Cup Outfits

Japan football fans arrive at the stadium before the start of the 2010 World Cup round of 16 match Paraguay versus Japan on June 29, 2010 at Loftus Versfeld Stadium in Tshwane/Pretoria.

Craziest World Cup Outfits

PRETORIA, SOUTH AFRICA - JUNE 29: A football fan enjoys the atmosphere prior to the 2010 FIFA World Cup South Africa Round of Sixteen match between Paraguay and Japan at Loftus Versfeld Stadium on June 29, 2010 in Pretoria, South Africa.

Craziest World Cup Outfits

Action photo of fans, during game of the 2010 World Cup held at the Loftus Versfeld of Pretoria, South Africa.

Craziest World Cup Outfits

A Portugal fan cheers prior to the World Cup round of 16 soccer match between Spain and Portugal at the Green Point stadium in Cape Town, South Africa, Tuesday, June 29, 2010.

Craziest World Cup Outfits

Action photo of fans, during game of the 2010 World Cup held at the Loftus Versfeld of Pretoria, South Africa.

Craziest World Cup Outfits