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A woman in a fancy dress costume jumps into Carnlough harbour, north of Belfast in Northern Ireland on January 1, 2015 for the annual New Years day charity harbour plunge. AFP PHOTO / PAUL FAITH (Photo credit should read PAUL FAITH/AFP/Getty Images)

Some people might spend the first day of 2015 in bed, recovering from the night before, but these daring revelers put on their fancy dress and hit the water:

A woman in a fancy dress costume jumps into Carnlough harbour, north of Belfast in Northern Ireland on January 1, 2015 for the annual New Years day charity harbour plunge. AFP PHOTO / PAUL FAITH        (Photo credit should read PAUL FAITH/AFP/Getty Images)
A young woman plunges into Carnlough harbor in Northern Ireland to kick off the New Year. (PAUL FAITH/AFP/Getty Images)
A woman jumps into Carnlough harbour, north of Belfast in Northern Ireland on January 1, 2015 for the annual New Years day charity harbour plunge. AFP PHOTO / PAUL FAITH        (Photo credit should read PAUL FAITH/AFP/Getty Images)
This girl rolled out of bed, showing up in her pajamas for the annual plunge. (PAUL FAITH/AFP/Getty Images)
A man jumps into Carnlough harbour, north of Belfast in Northern Ireland on January 1, 2015 for the annual New Years day charity harbour plunge. AFP PHOTO / PAUL FAITH        (Photo credit should read PAUL FAITH/AFP/Getty Images)
It’s not just about the costume, but how you make your entrance. (PAUL FAITH/AFP/Getty Images)
SOUTH QUEENSFERRY, SCOTLAND - JANUARY 01: Revelers make their way down steps as they joined around a thousand New Year swimmers, many in costume, braved freezing conditions in the River Forth in front of the Forth Rail Bridge during the annual Loony Dook Swim on January 1, 2013 in South Queensferry, Scotland. Thousands of people gathered last night to see in the New Year at Hogmanay celebrations in towns and cities across Scotland..  (Photo by Jeff J Mitchell/Getty Images)
Close to a 1000 people showed up for the Loony Dook Swim in South Queensferry, Scotland. (Jeff J. Mitchell/Getty Images)
SOUTH QUEENSFERRY, SCOTLAND - JANUARY 01:  Over 1000 New Year swimmers, many in costume, brave the freezing conditions in the River Forth in front of the Forth Rail Bridge during the annual Loony Dook Swim on January 1, 2013 in South Queensferry, Scotland. Thousands of people gathered last night to see in the New Year at Hogmanay celebrations in towns and cities across Scotland.  (Photo by Jeff J Mitchell/Getty Images)
By these swimmers’ reactions, it looks like the water might be cold. (Jeff J. Mitchell/Getty Images)
SOUTH QUEENSFERRY, SCOTLAND - JANUARY 01:  Over thousands New Year swimmers, many in costume, braved freezing conditions in the River Forth in front of the Forth Rail Bridge during the annual Loony Dook Swim on January 1, 2013 in South Queensferry, Scotland. Thousands of people gathered last night to see in the New Year at Hogmanay celebrations in towns and cities across Scotland.  (Photo by Jeff J Mitchell/Getty Images)
Yep, cold. (Jeff J. Mitchell/Getty Images)
WINDERMERE, ENGLAND - JANUARY 01:  Swimmers take a dip in the icy waters of Lake Windermere during a charity swim to welcome in the New Year at Lake Windermere on January 1, 2015 in Windermere, England. The swim, organised by Sleekerswim, saw novice and veteran wild water swimmers plunge into the lake during heavy rain and high winds to raise cash for charity and welcome 2015.  (Photo by Christopher Furlong/Getty Images)
These New Year swimmers take a relaxing swim in the icy waters of Lake Windermere in Windermere, England. (Christopher Furlong/Getty Images)
TENBY, WALES - JANUARY 01:  New Year's revellers take a dip in the icy sea during the Saundersfoot annual charity swim on January 1, 2010 in Saundersfoot near Tenby, Wales. Hundreds of brave swimmers ran in to to the sea to welcome in 2010 and raise cash for charity.  (Photo by Christopher Furlong/Getty Images)
If we didn’t know better, this New Year Day photo taken in Saudnersfoot, Wales, might be a midsummer beach snap. (Christopher Furlong/Getty Images)

Do you have a New Year’s Day tradition?

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By Brigid Brown