The Nontraditional Look Princess Charlene Wore to Grace Kelly's Favorite Ball Was Her Best of 2015

Getty | Pascal Le Segretain

Princess Grace Kelly wore some of her most iconic gowns to the famous Red Cross Ball, but Princess Charlene — who is married to the American actress's son, Prince Albert II — didn't let that determine her choice of outfit. For the biggest royal event of 2015 in Monte Carlo, the princess opted to skip a dress and instead wore a scarlet one-shouldered jumpsuit from Valentino's Resort 2015 collection.

The royal is known for her modern fashion picks, often wearing sheer, asymmetrical dresses and structured gowns right off the runway, but wearing this look to a classic Monégasque event was nothing short of risky even for her (even if she looks absolutely stunning). See more photos of what we're calling Princess Charlene's best 2015 style moment, then take a look at how the royal family celebrated Monaco Day.