Bows: we used to wear them in elementary school. If you're over the age of 12, can you still pull them off? Based on the chic photos above, I'd say probably.
Tips: plain black ribbon, effortless imperfect bow.
image credit from top left:
Cabbages & Roses, Pferdgarten Spring 2016, Vanessa Triana Snow (vogue.com)
Oscar de la Renta (vogue.com), french-vouguettes, Oscar de la Renta (allure.com)