Answer
"The It Girl," popularized by Clara Bow's captivating portrayal, refers to an alluring and captivating individual possessing an irresistible charm and charisma that captivates those around them. This phrase, coined in the 1920s, perfectly encapsulates the magnetic presence and allure that made Bow an icon of the era, embodying a certain "je ne sais quoi" that set her apart and left a lasting impact on popular culture.