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Indira Gandhi was the first (and so far only) female prime minister of India and the mother of two sons. Express Newspapers/Hulton Archive/Getty Images
Flowers are some of the most commonly purchased items in the United States on the second Sunday in May. Indeed, Mother's Day is like the Black Friday of the floral industry -- about 30 percent of American adults bought blooms to celebrate the day according to the Society of American Florists. It's also the most popular day of the year for folks to dine at restaurants [source: National Restaurant Association]. But oddly enough, the woman responsible for ushering Mother's Day into existence likely wouldn't approve of such extravagant spending.