calvin klein a line dress V-Neck Elastic Waistband Midi - Caper with its charming A Calvin Klein Women's Dresses Dress,

A train completes the whole look

The classic black is versatile and takes you from day to night

One leg finds space thanks to a cut up the side, just enough for walking or settling into a chair

Scroll down for video Monroe famously sang happy birthday to President John F Kennedy wearing the dress The custom-made dress is hand-stitched with more than 2,500 crystals, and was so tight it's said Marilyn had to be sewn into the gown The iconic dress was bought by the museum chain Ripley's Believe It Or Not, which has described it as 'the most iconic piece of pop culture there is' Edward Meyer, vice president of Ripley's Believe It Or Not, described the dress as 'the most iconic piece of pop culture that there is'