World's largest smiley face

A total of 3,110 students from Nanjing Agricultural University in China broke the Guinness World Record for World's Largest Smiley Face on Apr. 27, overtaking the last world record of 2,961 volunteers in Canada on July 2011.

Students stand in formation on a field as they form a smiley face in an attempt to break a world record in celebration of the 110th anniversary of their university in Nanjing, Jiangsu province April 27, 2012. A total of 3,110 students from Nanjing Agricultural University broke the Guinness World Record for World Largest Smiley Face on Friday, overtaking the last world record of 2,961 volunteers in Canada on July 2011.

People stand together as they create the biggest human smiley in the world on the Zagreb main square May 6, 2011. As many as 768 Croats managed to create the biggest human smiley breaking the Guinness World Record. The previous record involved 551 participants and was reached in the Latvian capital of Riga

In this publicity image released by the Orlando Convention & Visitors Bureau, five hundred people gather to set a new Guinness World Record for the world's largest smiley face on World Smile Day in Orlando, on Friday, Oct. 1, 2010.