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 III play. In a mid-credits scene after the wedding, Alan, Cassie, Stu, and Phil appear to have staged another wild party that they cannot remember. Stu emerges from the bathroom wearing panties with breast implants and Alan remembers that the wedding cake was a gift from Chow; who emerges from the next room naked, laughing, holding a bottle of whiskey and wielding a katana. Crystal the capuchin monkey then jumps on Stu before the scene cuts to black. In May 2011, days before the release of "The Hangover Part II", director Todd Phillips said that "there already are plans for a