Participants dressed as Santa Claus sing during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants dressed in Santa costumes sing during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants dressed in Santa costumes pose for a photograph during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants in Santa costumes walk through Clapham Common during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants dressed in Santa costumes sing on a train during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants dressed in Santa costumes climb a fence during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants dressed in Santa costumes gather during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants dressed in Santa costumes drink alcoholic beverages during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Participants dressed in Santa costumes sing on a train during the annual SantaCon event in London December 6, 2014. (Photo by Neil Hall/Reuters)

Thousands of runners in Father Christmas suits pose for a group photo after completing an annual Santa fun run from Darling Harbour to the Sydney Opera House, December 7, 2014. The annual event is held each year as a fundraiser to assist disadvantaged children with equipment and programs to help them live a fuller life. (Photo by Jason Reed/Reuters)

Runners in Father Christmas suits pose for a “selfie” photo after completing an annual Santa fun run from Darling Harbour to the Sydney Opera House, December 7, 2014. (Photo by Jason Reed/Reuters)

A Santa “elf” congratulates a runner across the finish line after completing the annual Santa fun run from Darling Harbour to the Sydney Opera House, December 7, 2014. (Photo by Jason Reed/Reuters)

An event announcer takes a “selfie” with thousands of runners in Father Christmas suits after completing an annual Santa fun run from Darling Harbour to the Sydney Opera House, December 7, 2014. (Photo by Jason Reed/Reuters)

A man dressed as Santa Claus poses during a base flying event in downtown in Berlin December 6, 2014. Participants of the event hosted by entertainment agency Jochen Schweizer flew down 98 metres (322 ft.) from atop the hotel in the German capital. (Photo by Hannibal Hanschke/Reuters)

A man dressed as Santa Claus poses during a base flying event in downtown in Berlin December 6, 2014. (Photo by Hannibal Hanschke/Reuters)

A man dressed as Santa Claus poses during a base flying event in downtown in Berlin December 6, 2014. (Photo by Hannibal Hanschke/Reuters)

A man dressed as Santa Claus poses during a base flying event in downtown in Berlin December 6, 2014. (Photo by Hannibal Hanschke/Reuters)

A man dressed as Santa Claus poses during a base flying event in downtown in Berlin December 6, 2014. (Photo by Hannibal Hanschke/Reuters)

A man dressed as Santa Claus poses during a base flying event in downtown in Berlin December 6, 2014. (Photo by Hannibal Hanschke/Reuters)

Runners dressed in Santa Claus costumes take part in the “Santa Claus Run” in Budapest, December 6, 2014. Around 3,000 runners took part this year. (Photo by Bernadett Szabo/Reuters)

Runners dressed in Santa Claus costumes take part in the “Santa Claus Run” in Budapest, December 6, 2014. (Photo by Bernadett Szabo/Reuters)

Runners dressed in Santa Claus costumes take part in the “Santa Claus Run” in Budapest, December 6, 2014. (Photo by Bernadett Szabo/Reuters)

Runners dressed in Santa Claus costumes take part in the “Santa Claus Run” in Budapest, December 6, 2014. (Photo by Bernadett Szabo/Reuters)

People dressed in Santa Claus costumes participate in the Tokyo Santa Run at a park in Tokyo December 6, 2014. Hundreds of people wearing costumes participated in the 2.5km (1.5 miles) charity run on Saturday to raise funds for children ahead of the upcoming Christmas season. (Photo by Yuya Shino/Reuters)

People dressed in Santa costumes pose for pictures during the Tokyo Santa Run at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

People dressed in Santa costumes rest on the ground after participating in the Tokyo Santa Run at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

People dressed in Santa costumes participate in the Tokyo Santa Run as a man runs towards the finish line, at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

People dressed in Santa costumes participate in the Tokyo Santa Run at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

People dressed in Santa costumes take “selfies” during the Tokyo Santa Run at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

People dressed in Santa costumes pose for pictures during the Tokyo Santa Run at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

Women dressed in Santa costumes rest after the Tokyo Santa Run at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

A dog dressed in a costume participate in the Tokyo Santa Run at a park in Tokyo December 6, 2014. (Photo by Yuya Shino/Reuters)

People in Santa Claus costume assemble at the start of Santa Run at Kasai Rinkai Park in Tokyo, Saturday, December 6, 2014. Over 400 people participated in the 2.5 kilometers (1.5 miles) run. (Photo by Eugene Hoshiko/AP Photo)

Costumed participants attend the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. About 100 participants attended the event organised for the benefit of the Romanian Association of Pediatric Orthopedists and Traumatologists. (Photo by Bogdan Cristel/Reuters)

A costumed participant attends the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. (Photo by Bogdan Cristel/Reuters)

Costumed participants attend the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. (Photo by Bogdan Cristel/Reuters)

Costumed runners participate in the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. (Photo by Bogdan Cristel/Reuters)

Costumed runners participate in the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. (Photo by Bogdan Cristel/Reuters)

A costumed participant stretches ahead of the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. (Photo by Bogdan Cristel/Reuters)

A costumed runner participates in the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. (Photo by Bogdan Cristel/Reuters)

Costumed runners participate in the “Santa Claus Run” in Mogosoaia, near Bucharest December 6, 2014. (Photo by Bogdan Cristel/Reuters)

A runner takes part in the 15th annual Santa Speedo Run, a charity run through the streets of the Back Bay, in Boston, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

Participants begin running at the starting line for the 15th annual Santa Speedo Run, a charity run through the streets of the Back Bay, in Boston, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

A runner (L) high fives a driver passing by after completing the 15th annual Santa Speedo Run, a charity run through the streets of the Back Bay, in Boston, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

A runner takes part in the 15th annual Santa Speedo Run, a charity run through the streets of the Back Bay, in Boston, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

Onlookers high five runners taking part in the 15th annual Santa Speedo Run, a charity run through the streets of the Back Bay, in Boston, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

A pregnant woman with a painted stomach participates in the 15th annual Santa Speedo Run through the streets of the Back Bay in Boston, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

Onlookers high-five runners taking part in the15th annual Santa Speedo Run, a charity run through the streets of the Back Bay, in Boston, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

A woman buys gingerbread from a vendor wearing Santa outfit at the Christmas market in Riga, Latvia, December 6, 2014. (Photo by Ints Kalnins/Reuters)

A dog jumps as participants dressed in Santa Claus costumes attend a charity running event to raise money and awareness for autism patients, in Xi'an, Shaanxi province December 6, 2014. A total of 150 volunteers took part in the charity event on Saturday wearing Santa costumes to celebrate the upcoming Christmas, local media reported. (Photo by Reuters/Stringer)

Two girls dressed with Santa Claus costumes display advertising on they Segway electric vehicles as they tour downtown Milan, Italy, Friday, December 5, 2014. (Photo by Luca Bruno/AP Photo)

A man dressed as Santa Claus waves from the back of an antique fire truck after arriving on a lobster boat for the town's Tree Lighting ceremony in Rockport, Massachusetts December 6, 2014. (Photo by Brian Snyder/Reuters)

Two women pose for a picture with a man dressed as Santa Claus at the Christmas market in Riga December 6, 2014. (Photo by Ints Kalnins/Reuters)

A man dressed like Santa Claus waves as he takes part in a parade during the annual illumination of Christmas lights in Warsaw December 6, 2014. (Photo by Bartosz Bobkowski/Reuters/Agencja Gazeta)