Some once-in-a-lifetime opportunities come up at auctions. Imagine having the chance to own a famous diamond, a world-renowned automobile or an original notebook of Leonardo DaVinci. The trick is to outbid everyone else — if you can afford it! The following are some of the most expensive items ever sold at auction; many are record-breakers.
Most Expensive Garment: Marilyn Monroeâ€™s â€śHappy Birthday, Mr. Presidentâ€ť Dress
With over 2,000 rhinestones, this backless, slinky dress is what most people remember about the Happy Birthday tribute for President John F. Kennedy in 1962. It was purchased in 1999 for $1.26 million by a collectibles company.