By Emma Mackenzie One of the many perks of being monarch is probably getting to enjoy the most luxurious nighttime routine possible, and the late Queen Elizabeth II certainly did just that. Over the course of her reign – which was the longest in British history lasting over seventy years – she is said to have always indulged in one particularly luxurious habit each evening. Being the head of the Royal Family, it is unlikely that anyone could really direct the late Queen not to indulge in a little treat every evening, even if it was something that for the rest of us would only be reserved for r…