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 in The Netherlands and $6.2 million in France and $3.1 million in Italy ($4.6 million with previews); a five-fold increase over the opening weekend gross of "The Hangover". On its second weekend, the film accrued $63.8 million from 53 territories, placing it second behind "Pirates of the Caribbean: On Stranger Tides," the film having earned 79 percent of its predecessor's entire overseas run. On the weekend of June 10–12, 2011, it surpassed its predecessor and "There's Something About Mary" in international earnings to become the highest-grossing R-rated comedy overseas. On Rotten Tomatoes the film has an approval rating of 33%