One question often asked by hardcore antique fans and collectors alike is, “What are the most expensive items ever sold at auctions?” . No comic books, action figures or other licensed collectibles even come close to what these top 7 items got sold for. From Gigayachts to Marilyn Monroe Happy Birthday Mr. President Dress, here is a of the most expensive items sold at auctions.

Marilyn Monroe’s “Happy Birthday Mr. President” Dress

The Dress was sold in 1999 for $4,600,000.

When Marilyn Monroe delivered an engaging “Happy Birthday” serenade to President John F. Kennedy on May 19, 1962, the blonde bombshell wore a flesh-colored, curve-hugging, jewel-encrusted dress so tight and sheer that, according to reliable source, Monroe was sewn into the gown and wore nothing under it. Yikes!

It is rumored that the two had an affair and everyone could see from the way she presented the song, she was definitely in love.