But honestly, if your dressing thickens when chilled, it's no big deal and it's easy to remedy
Sau Lee polka dot Lucy dress, from $33 to rent, Rent the Runway 16

How much yarn needed for the sweater dress: XS color 1: 370 g / 670 m / 730 yards / 8 skeins XS color 2: 130 g / 220 m / 250 yards / 3 skeins S color 1: 430 g / 770 m / 840 yards / 9 skeins S color 2: 150 g / 260 m / 280 yards / 3 skeins M color 1: 490 g / 880 m / 950 yards / 10 skeins M color 2: 170 g / 290 m / 310 yards / 4 skeins L color 1: 550 g / 990 m / 1080 yards / 11 skeins L color 2: 190 g / 330 m / 350 yards / 4 skeins XL color 1: 610 g / 1110 m / 1210 yards / 13 skeins XL color 2: 210 g / 360 m / 400 yards/ 4 skeins 2XL color 1: 680 g / 1230 m / 1340 yards / 14 skeins 2XL color 2: 230 g / 400 m / 440 yards / 5 skeins 3XL color 1: 750 g / 1350 m / 1470 yards / 16 skeins 3XL color 2: 250 g / 440 m / 480 yards / 5 skeins 4XL color 1: 820 g / 1480 m / 1620 yards / 17 skeins 4XL color 2: 270 g / 480 m / 520 yards / 6 skeins 5XL color 1: 900 g / 1620 m / 1760 yards / 18 skeins 5XL color 2: 300 g / 520 m / 570 yards / 6 skeins Yarn characteristics: 3 light yarn, DK yarn

Kate Middleton, like every royal, is something of a fashion maven
Ivory Flower Corset Boning A-Line Floral Prom Dress with Slit Bust: Wear the bra you will be wearing with the dress, and pull the tape across the fullest part of the bust
Ill wear these tiny faux diamond earrings or pearls