The Hangover Part II takes no chances and opts for a safe, subdued pre-wedding brunch. Things do not go as planned, resulting in another bad hangover with no memories of the previous night. Development began in April 2009, two months before "The Hangover" was released. The principal actors were cast in March 2010 to reprise their roles from the first film. Production began in October 2010, in Ontario, California, before moving on location in Thailand. The film was released on May 26, 2011 and became the highest-grossing R-rated comedy during its theatrical run. A third and final installment, "The Hangover Part III", was released
The Hangover Part II Mr. Chow as an offensive caricature and stated doing the character was "very cathartic" for him and said the character "has the inflections of Vietnamese, with kind of the anger of my own Korean nature" although "it's definitely not about an accent, or a stereotype." As the film comes to a close, many photos are revealed depicting the events of the previous night. Among them is a photo which loosely depicts a famous war photo by photographer Eddie Adams of a public execution during the Vietnam War. Film critic Roger Ebert was amongst those who criticized use of the photo,