Two skiers participate in a water sliding contest, in which athletes are gliding over a pool embedded in snow, in Verbier, southwestern Switzerland, Saturday, April 25, 2015. (Photo by Maxime Schmid/Keystone via AP Photo)

In this April 21, 2015 file photo, tourists use selfie sticks to take photos of themselves with their smartphones, at one of Singapore's popular tourists spots with the financial skyline in the background, in Singapore. (Photo by Wong Maye-E/AP Photo)

A woman takes “selfies” on a camera phone along an avenue of cherry trees coming into blossom in Greenwich Park, south London, April 19, 2015. (Photo by Toby Melville/Reuters)

A soldier takes a selfie beside a Pilatus PC-12 after the inauguration of the first Aerospace Fair 2015 at the Santa Lucia military airbase in Tecamac near Mexico City April 22, 2015. (Photo by Henry Romero/Reuters)

An anti-riot policemen holding a weapon takes a picture with students near an armoured car as he stands guard for a commemorative ceremony for the 1955 Asia-Africa Conference in Bandung, West Java province, April 23, 2015. (Photo by Reuters/Beawiharta)

A woman takes a selfie photo with the “Red Smile” by Alex Katz during the opening preview at The Whitney Museum of American Art in New York April 23, 2015. (Photo by Brendan McDermid/Reuters)

People pose for pictures with a statue of former South Africa's president Nelson Mandela in Bandung, Indonesia, April 24, 2015. (Photo by Reuters/Beawiharta)

SoftBank Corp's humanoid robot named “Pepper” takes a “selfie” photo with a large robot (L in background) from the Japanese live action film series “The Next Generation – PatLabor” and its application designer (R) at a booth during Niconico Chokaigi 2015 in Makuhari, east of Tokyo, Japan April 26, 2015. (Photo by Yuya Shino/Reuters)

Local party activist Sarah Lindsey displays her “selfie” photograph with Britain's Prime Minister David Cameron during a campaigning event in Norton Sub Hamdon near Yeovil, south west England, Britain, April 25, 2015. (Photo by Toby Melville/Reuters)

People photograph themselves in front of an animatronic dinosaur at the William J. Clinton Presidential Center & Park in Little Rock, Arkansas, United States April 27, 2015. (Photo by Lucy Nicholson/Reuters)

A guest snaps a “selfie” with visiting Japanese Prime Minister Shinzo Abe (R) during an official arrival ceremony for Abe on the White House South Lawn in Washington, April 28, 2015. (Photo by Jonathan Ernst/Reuters)

Mick Solak of Britain takes a selfie with Tecate Girl Vanessa Golub during a Manny Pacquiao fan rally at the Mandalay Bay Resort in Las Vegas, Nevada April 28, 2015. (Photo by Steve Marcus/Reuters/Las Vegas Sun)

An employee of the National Park Service takes a selfie with President Barack Obama, left, in the background meeting with the crowd after a tour of Everglades National Park on Earth Day, Wednesday, April 22, 2015, in Florida. Obama used the visit to warn of the damage that climate change is already inflicting on the nation's environmental treasures. (Photo by Lynne Sladky/AP Photo)

A man takes a selfie at the historic Dharahara Tower, a city landmark, that was damaged in Saturday's earthquake in Kathmandu, Nepal, Monday, April 27, 2015. A strong magnitude earthquake shook Nepal's capital and the densely populated Kathmandu valley on Saturday devastating the region and leaving tens of thousands shell-shocked and sleeping in streets. (Photo by Bernat Armangue/AP Photo)

A woman with St. George ribbon, a symbol of the Soviet participation in the World War II, on a handbag, takes a selfie, with St. Basil Cathedral in the background, in Red Square in Moscow, Russia, Tuesday, April 28, 2015. The Victory Day military parade to celebrate 70th anniversary of the victory in WWII, will be held in Red Square on May 9. (Photo by Pavel Golovkin/AP Photo)

A tourist takes a selfie with her smart phone at Keukenhof, known as the Garden of Europe, a spring park with approximately seven million flower bulbs, in Lisse, Netherlands, Tuesday, April 21, 2015. (Photo by Peter Dejong/AP Photo)

Actress and host Shay Mitchell (R) poses with friend Samantha Rosenmann at the launch party for Palm Breeze, a new sparkling alcohol spritz from Mike's Hard Lemonade, Co., at the Viceroy Santa Monica, Saturday, April 25, 2015 in Santa Monica, Calif. (Photo by Jeff Lewis/AP Images for Palm Breeze)

Paris Hilton (L) and DuJour Media Correspondent Jordan Duffy attend Jason Binn's celebration of Paris Hilton's Spring Cover on DuJour Magazine on April 27, 2015 in New York City. (Photo by Astrid Stawiarz/Getty Images for DuJour)

Tourists check photos taken of themselves on their smart phones at a popular tourist spot, Tuesday, April 21, 2015, in Singapore. (Photo by Wong Maye-E/AP Photo)

Britain's Prime Minister David Cameron, center, poses for a photo with a supporter in Penzance, in south west England, Thursday April 23, 2015. (Photo by Toby Melville/Pool Photo via AP Photo)

Brides of the Pal community take a selfie with a cell phone during a procession before a mass marriage ceremony on the occasion of Akshaya Tritiya festival in Bhopal, India, 21 April 2015. The day is believed to be the most sacred day of marriages in Hindu mythology. More than 35,000 weddings have taken place all over the Mahdya Pradesh state only on the auspicious day. (Photo by Sanjeev Gupta/EPA)

Democratic presidential hopeful and former Secretary of State Hillary Clinton (R) stops to take a selfie after meeting with members of the Iowa State legislature at the Iowa State Capital on April 15, 2015 in Des Moines, Iowa. (Photo by Justin Sullivan/Getty Images)

Swiss pilot Bertrand Piccard takes a selfie in the Solar Impulse 2 plane during the sixth leg of the round-the-world trip, from Chongqing Jiangbei International Airport to Nanjing Lukou International Airport in Jiangsu province, in China, in this April 21, 2015 handout photograph released by Solar Impulse. (Photo by Bertrand Piccard/Reuters/Solar Impulse)

Swiss pilot Bertrand Piccard takes a selfie with his arm outside the Solar Impulse 2 plane during the 6th leg of their round the world trip, from Chongqing Jiangbei International Airport to Nanjing Lukou International Airport, Jiangsu province in China in this April 21, 2015 handout photograph released by Solar Impulse. (Photo by Bertrand Piccard/Reuters/Solar Impulse)

A Star Wars fan takes a selfie with the Roxy the Rancor exhibit at Star Wars Celebration: The Ultimate Fan Experience held at the Anaheim Convention Center on Thursday, April 16, 2015, in Anaheim, Calif. (Photo by Richard Shotwell/Invision/AP Photo)