At close to $1.3 million, the most expensive dress ever sold was the one she wore to serenade JFK in 1962
The famous dress that Marilyn Monroe wore to seductively serenade ...... John 
F. Kennedy on May 19, 1962, sold at this auction for nearly $1.3 million, and ... 
the most expensive dress ever sold at auction, a record formerly held by one of... [DOC] [TLE] Monroe's 'Happy Birthday Mr President' gown to be auctioned [PAR] Sep 8, 2016 ... Marilyn Monroe's famous "Happy Birthday Mr. President" dress is ... Marilyn 
Monroe wore to coquettishly serenade President John F. Kennedy for ... later, it 
remains the most famous version of 'Happy Birthday' ever.