A couple uses a selfie stick to take a photo of themselves as visitors using smartphones take souvenir photos at Tiananmen Square in Beijing, China, Thursday, April 30, 2015. Selfie stick are gaining popularity in China, and many people are using them at popular tourist destinations. (Photo by Andy Wong/AP Photo)

First Minister of Scotland and Scottish National Party leader Nicola Sturgeon, second right, poses for photographs at the count of Glasgow constituencies for the general election in Glasgow, Scotland, Friday, May 8, 2015. (Photo by Scott Heppell/AP Photo)

J.R. White, right, takes a selfie in front of a mural that was painted at the site of Freddie Gray's arrest, Saturday, May 2, 2015, in Baltimore, as protesters prepare to march to City Hall. (Photo by Patrick Semansky/AP Photo)

Fans shoot a selfie before the 141st running of the Kentucky Oaks horse race at Churchill Downs Friday, May 1, 2015, in Louisville, Ky. (Photo by Darron Cummings/AP Photo)

A woman reacts as she uses a selfie stick to take a photo of herself at Tiananmen Square in Beijing, China, Thursday, April 30, 2015. Selfie sticks are gaining popular in China, and many people are using them at popular tourist destinations. (Photo by Andy Wong/AP Photo)

A tourist uses a selfie stick to take a photo of themselves in front of a large portrait of late Chinese leader Mao Zedong on the Gate of Heavenly Peace near Tiananmen Square in Beijing, Sunday, May 3, 2015. (Photo by Mark Schiefelbein/AP Photo)

Civil defense members pose for a picture after they finished working at a damaged site hit by what activists said was shelling on Tuesday by forces loyal to Syria's President Bashar al-Assad in Aleppo's al-Aryan neighborhood April 30, 2015. (Photo by Hosam Katan/Reuters)

Cast member Sofia Vergara poses with a fan at the premiere of “Hot Pursuit” in Hollywood, California April 30, 2015. (Photo by Mario Anzuoni/Reuters)

Miss Universe 2015 Paulina Vega of Colombia takes a “selfie” with her fans upon her arrival at Barranquilla May 1, 2015. (Photo by Alfonso Cervantes/Reuters)

U.S. Secretary of State John Kerry takes a selfie with a baby elephant while touring the Sheldrick Center Elephant Orphanage at the Nairobi National Park, Sunday, May 3, 2015, in Nairobi, Kenya. (Photo by Andrew Harnik/Reuters)

A model poses for a selfie with the newly launched Xiaomi Mi 4i phone in Hong Kong, China May 5, 2015. According to researcher Strategy Analytics, Chinese brand Xiaomi Inc topped the league table in the first quarter of 2015 in China's smartphone market, with 12.8 percent of the 110 million units shipped, followed closely by Apple Inc at 12.3 percent and Huawei Technologies Co Ltd, another Chinese player, at 10.2 percent. (Photo by Bobby Yip/Reuters)

Cast member Charlize Theron poses with fans at the premiere of “Mad Max: Fury Road” in Hollywood, California May 7, 2015. (Photo by Mario Anzuoni/Reuters)

Cast member Tom Hardy poses with a fan at the premiere of “Mad Max: Fury Road” in Hollywood, California May 7, 2015. (Photo by Mario Anzuoni/Reuters)

People pose for a photograph in front of the installation to commemorate victory day near the Red Square in Moscow, Russia May 8, 2015. Russia marks the 70th anniversary of the end of World War Two in Europe on Saturday with a military parade, showcasing new military hardware at a time when relations with the West have hit lows not seen since the Cold War. (Photo by Maxim Bolshoy/Reuters)

France's President Francois Hollande takes a picture with students in Saint Barthelemy on May 8, 2015, as part of a five days visit to the Caribbean including Guadeloupe, Martinique, Cuba and Haiti. (Photo by Alain Jocard/AFP Photo)

Dannii Minogue poses for a selfie with a fan in the crowd who sticks her tongue out at the 57th Annual Logie Awards at Crown Palladium on May 3, 2015 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

Models take pictures as they prepare in the backstage to display creations by Lebanese international designer Abed Mahfouz during his Spring-Summer 2015 fashion show in Beirut, Lebanon, Wednesday, April 29, 2015. (Photo by Hussein Malla/AP Photo)

Anna Kendrick takes a selfie with a fan at the world premiere of “Pitch Perfect 2” at Nokia Theatre L.A. Live on Friday, May 8, 2015, in Los Angeles. (Photo by Chris Pizzello/Invision/AP Photo)

A couple wears facemarks as they pose for a self-portrait near a large statue of late Chinese leader Mao Zedong during a sandstorm in Kashgar city in northwestern China's Xinjiang Uighur Autonomous Region, Sunday May 10, 2015. (Photo by Chinatopix via AP Photo)

People take “selfies” with Titan the Robot, in Bucharest, Romania, Monday, May 11, 2015. Titan the robot is produced by British company Cyberstein Robots Ltd and gained world recognition in pop videos dancing alongside artists such as Rihanna in music videos. (Photo by Vadim Ghirda/AP Photo)

Local rappers from right, Kova, Bilal and Spence sing on a street corner near the scene of some of Monday's rioting following Freddie Gray's funeral, Sunday, May 3, 2015, in Baltimore. (Photo by David Goldman/AP Photo)

A woman dressed in the traditional dress of a Haitian agricultural worker poses for a selfie before the start of a May Day parade, in Port-au-Prince, Haiti, Friday, May 1, 2015. (Photo by Dieu Nalio Chery/AP Photo)

A member of the Serbian transgender community uses a phone to take a photo during a transgender equality event in Belgrade, Serbia, Saturday, May 9, 2015. (Photo by Marko Drobnjakovic/AP Photo)

A National Guard soldier poses for a selfie the morning after citywide riots following the funeral of Freddie Gray, on April 28, 2015 in Baltimore, Maryland. (Photo by Mark Makela/AFP Photo)

Actress and host Shay Mitchell snaps a selfie 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. Image released on Wednesday, April 29th, 2015. (Photo by Jeff Lewis/AP Images for Palm Breeze)

A model takes a selfie with an LG Electronics' new G4 smartphone during its unveiling ceremony in Seoul, South Korea Wednesday, April 29, 2015. (Photo by Ahn Young-joon/AP Photo)

Conservative Party activists pose for a selfie whilst wearing face masks of Scottish National party leader Nicola Sturgeon during a stunt outside the Houses of Parliament, in central London, Britain, May 1, 2015. (Photo by Peter Nicholls/Reuters)

A Thai woman uses a smartphone to take a selfie photograph with a Golden Retriever dog during the Pet Expo Thailand 2015 press conference in Bangkok, Thailand, 11 May 2015. (Photo by Rungroj Yongrit/EPA)