kawaii pink dress US$ 75.99 - Sweet Cute Slip with Back Bow The dreamy puff sleeves add a touch of cuteness Anime Costume - Kawaii Pink

Alternatively, choose a slit dress but in a longer version

Ankle-height design provides subtle coverage while maintaining sleek profile

While the mustard, ruby, and light brown hues of the changing leaves serve as a great starting point when shopping, there's a bit more that goes into finding the perfect outfit

To help balance out the look, I would choose a brown bag or perhaps brown belt to add a touch more to the look create a cohesive contrast

In very casual contexts, some people might use formal attire to mean simply dressing up in a regular suit, so its important to understand the context or specific dress code mentioned on an invitation