Oh dear... I'm the wrong side of 40 and an average height, hourglass, size 12.
I bought mine in an impulsive moment when it caught my eye taking a short cut through Selfridges. It did not look like a slip on the hanger. It doesn't on me. Most people would describe my style as demure rather than slapperish. I guess it depends on how you wear it, what you wear it with... It looks very different on me from those photos! But then it looks different on the model and both the girls from Geordie Shore. I do get lots of compliments when I wear it though.
That said, I've checked, mine is a size up so it skims rather than clings.