The moment Kanye West proposed to Kim Kardashian

Video footage has emerged of the moment Kanye West proposed to his girlfriend Kim Kardashian at San Francisco's Major League Baseball stadium.

The rapper surprised his girlfriend and popped the question in front of family and friends at her 33rd birthday celebration on Monday.

West and Kardashian started dating in April 2012 and have a daughter, North West, who was born in June.