Selfie Fever (Look Who is Posing)

1. Students take selfies with German Chancellor Angela Merkel, as she arrives for a visit at Robert-Jungk Europe high school as part of the Europe-Project Day, in Berlin.

#Chancellor Angela

2. A file picture of Prime Minister Narendra Modi as he takes a photo with a mobile phone after casting his vote at a polling station during the Lok Sabha election in Ahmedabad.

#Narendra modi

3. Britain's Prime Minister David Cameron (Centre) and Chancellor of the Exchequer George Osborne (right) pose for a selfie with an apprentice during a visit to the Spooner engineering works in Ilkley, northern England.

#David Cameron

4. US President Barack Obama poses with star player David Ortiz as he welcomes the 2013 World Series Champion Boston Red Sox to the South Lawn of the White House in Washington.

#Barack Obama