burgundy t shirt dress Boden Women's Tilda Jersey T-shirt in Brown crafted in our signature stretch cotton jersey. H&M MAMA - Burgundy MAMA

If the evening event is designated as semi-formal or black-tie optional, an elevated, beautifully embellished short dress can work perfectly

Many of them also come in multiple colors, so look into them

Peppermayo Tayla Linen Maxi Dress Yellow, $113: SHOP NOW Linen is the unexpected bridal party fabric of the season and this relaxed yet romantic cut proves why

So even if you do choose to wear smart jeans and a fresh white t-shirt, you can up the ante with a pair of heels and a fancy handbag (leave your cotton tote at home.) A simple dress will become an elevated outfit with some bold jewellery and a designer belt

I did a bit of research and narrowed it down to these two listed below (one is white, and the other is cream)

2011 Just a few months after getting married, Kate wore newlywed (or is it Wimbledon?) whites, on an extremely hot day in South London