sweetheart neckline formal dress Long CK918 by Ladivine length silhouette Sweetheart Evening Dresses | La

As per always, it's wise to defer to Catherine, Duchess of Cambridge on such matters: Here she is earlier this year wearing a simple yet sophisticated dress by Matthew Williamson

Consider a dress with the same vibe: traditional, perhaps, but also celebratory, festive, and fun

Dress Size 4-8: Medium

Outfit Details Outfit Details Look 1: Dress (xs) | Sneakers | Denim Jacket | Sunglasses | Similar Handbag Look 2: Dress (xs) | Shoes | Sunglasses | Similar Handbag Photos: Arielle Levy A special thank you to Nordstrom for sponsoring this post

These photos are my favorite outfits we have done so far

I had such an incredible time dress shopping with Aja