Today, the second Sunday of May, is Mother's Day in many countries, when mothers around the globe receive cards celebrating Mothers', Mother's, and Mothers Day. But which is it? Is there a correct spelling?

According to this article, Anna Jarvis, the creator of Mother's Day, "was specific about the location of the apostrophe; it was to be a singular possessive, for each family to honour their mother, not a plural possessive commemorating all mothers in the world."

To celebrate this day, however it's spelt, Bored Panda has collected this list of mothers and their lookalike daughters. Which pair do you find the most adorable? Vote, or submit your own, matching mother-daughter photo below!