There are some moments that are so ingrained in American pop culture that almost everyone knows something about it, even if they don’t know the whole story. When Marilyn Monroe cooed her version of "Happy Birthday" to President John F. Kennedy at New York's Madison Square Garden on May 19, 1962, the world was forever intrigued. Marry that with the fact that both tragically died soon after this event, turned something a little interesting to something of legend.

On Nov. 17, the beige colored dress encrusted with rhinestones that Monroe wore when she performed the song will be auctioned off by Julien's Auctions in Los Angeles and as the Telegraph noted, it is expected to sell for upwards of $3 million.

One reason why this dress may fetch such a price is because it has been told that Marilyn had to be sewn into the gown after a zipper malfunction, thus making it have more notoriety.

The dress was designed by Jean Louis, a Hollywood costume designer. It originally sold for $1.27 million in 1999 at a Christie's auction, thus making it the most expensive piece of personal clothing ever to be sold at auction. Movie costumes have fetched much larger prices though.  In fact, in 2011, the white pleated dress from The Seven Year Itch sold for $4.6 million and remains the most expensive dress sold at an auction.

Other personal items are expected to fetch high prices too. Her used tube of Revlon lipstick called “Bachelor’s Carnation,” is expected to reach near $3,000. Other items include more clothes and some jewelry.

"In the world of investing, Marilyn Monroe has proven to be a blue chip when it comes to a secure asset," Darren Julien, president and CEO of Julien's Auctions told to CNN.  "Her values only continue to increase in time as it becomes more difficult to obtain items from her life or career. Also, as other markets continue to increase like Asia and Russia with technology, the fan and collector base for her items will only get stronger."

As her popularity is still high, collectors are willing to pay for items that belonged to this Hollywood legend.