The Hangover Part II and earlier comments made by Phillips denying such reports were a deliberate case of misdirection. The following month, Bradley Cooper stated he believed the rumors to be true and was looking forward to filming "The Hangover 2" in Thailand. In October 2010, Phillips confirmed that the film would take place in Bangkok and Los Angeles and that Galifianakis, Cooper, Helms and Ken Jeong would be returning. On a budget of $80 million, principal photography began on October 8, 2010, in Ontario, California with the first images of production being released a few days later. It was also reported in October
The Hangover (film series) opts for a safe, subdued pre-wedding brunch. However, things do not go as planned, resulting in another bad hangover with no memories of the previous night. Once again someone is lost, this time Stu's future brother-in-law, and Phil, Stu, and Alan search for him in Bangkok. Warner Bros. hired Todd Phillips and Scot Armstrong to write a sequel to "The Hangover" after a trailer brought down the house at ShoWest in April 2009, two months before the film was released. The principal actors were cast in March 2010 to reprise their roles from the first film. Production began in October