There's a certain je ne sais quoi that takes a celebrity from being considered really stylish, to being canonized a fashion icon. Jackie O and Marilyn Monroe are members of the exclusive "icon" club, but now, let's turn our focus to America's very own Oscar-winning actress turned Princess of Monaco, Grace Kelly. Even before she captured the world's attention for her stunning (and much copied) wedding dress for her marriage to Prince Ranier in 1956, it's her daytime outfits, sophisticated suiting, crisp car coats, and austere-yet-feminine evening gowns that are influencing designers even today. She even inspired one of fall's biggest handbag trends: the box bag! Scroll through these 15 archival images that prove that Princess Grace will forever be a style inspiration to us all: Here she wears a cowboy hat and midi skirt, a look that could have easily been on the fall 2015 runways, circa 1945. She wore an emerald green gown to celebrate St. Patrick's Day in 1954. This ruched white gown and diamond collar in To Catch a Thief in 1955 is a look synonymous with the star. She was classically graceful in a cardigan and self-tie blouse in 1955. She wore a belted shirtdress,