Midsummer Night's Dream party is an annual event hosted by Hugh Hefner at his Playboy Mansion. However, this year's party was hosted by Hefner's son Cooper whereas 90-year-old Hugh was no where to be seen. For those who don't know, the mansion was sold for $100 million last week to investor Daren Metropoulos. Interestingly, he will let Hugh Hefner living in the mansion, however there is no information whether annual summer parties will continue to take place.