midi chiffon dress Alie Street Marissa in Ditsy Navy Floral Print 23.5 Hips Vila long sleeve tiered chiffon

Mia Thermopolis From The Princess Diaries Genovia won't even know what's coming when you dress up as Mia Thermopolis this Halloween

for the 2026 Oscar Awards

Black midi dress in mesh Rib knit fabric, with short sleeves and crew neckline

Keep the look simple with a pair of strappy heels or dress it down with flats for a more relaxed vibe

tank top + linen shorts + ballet flats + straw bag + accessories top | shorts | bag | shoes | bracelet | earrings Bring out your white tank top during the hot days spent strolling around street markets and eating at a delicious traditional Italian restaurant

Though the coat dress has almost become synonymous with Middleton, this particular outfit seems like a nod to her late mother-in-law, Princess Diana