Time magazine's most influential teens of 2013

US President Barack Obama's elder daughter Malia and Pakistani girls' education activist Malala Yousafzai have been named among the 16 most influential teens of 2013 by Time magazine.

15-year-old Malia Obama (centre) seen here with Barack Obama, First Lady Michelle Obama and younger sister Sasha Obama leave Saint John's Church in Washington after attending church service on October 27, 2013.

16-year-old Malala Yousafzai appears onstage at Glamour's 23rd annual Women of the Year awards on November 11, 2013 in New York City.
Pop singer Justin Bieber, 19, performs during his concert in Asuncion, Paraguay on November 6, 2013.
Olympic gold medallist swimmer Missy Franklin, 18, speaks onstage during the 34th annual Salute to Women In Sports Awards at Cipriani, Wall Street on October 16, 2013 in New York City.

16-year-old golfer Lydia Ko of New Zealand playing at the CN Canadian Women's Open at Royal Mayfair Golf Club on August 25, 2013 in Edmonton, Alberta, Canada.
18-year-old Briton Nick D'Aloisio, who sold his mobile news reader app Summly to Yahoo!, speaking during an interview in London on March 26, 2013.
16-year-old Dante de Blasio walks with his father New York Mayor-elect Bill de Blasio on November 5, 2013 in New York.