In cooler temps, you can always add a pair of sheer tights for extra warmth and then simply throw on a long pendant necklace and a pair of matching leather gloves for a chic, sophisticated outfit
For women, Id recommend wearing a blazer, but in a slightly more eye-catching colour than the usual black or grey, such as navy blue or cream
They are one piece that adds up to the total sum of your powerful presentation

Bolthouse Farms Cucumber Ranch Yogurt Dressing & Dip, 12 fl oz, 12 Fluid ounce $3.99 $0.33/fl oz Ingredients Buttermilk (Cultured Nonfat Milk, Milk, Sodium Citrate, Vitamin A Palmitate), Filtered Water, Cucumber, Yogurt (Cultured Pasteurized Grade A Milk, Cream, Nonfat Milk, Pectin, Carrageenan), Soybean Oil, Whey Protein Concentrate, Reduced Acid Pineapple Juice Concentrate, Distilled Vinegar, Contains 2% or less: White Balsamic Vinegar, Salt, Buttermilk Powder, Onion Powder, Onion Powder, Garlic Powder, Natural Flavor, Citric Acid, Spice, Egg Yolk, Xanthan Gum, Cilantro, Mustard Seed, Black Pepper Product Number: 00071464022839 35cal Calories 2g Total Fat 2g Total Sugars 210mg Sodium Nutrition Facts Per recommended serving 2 tbsp (30g) serving size 30 gram Amount Per Serving Calories 35 % Daily Values * Total Fat2g3 % Saturated Fat0.5g 3% Trans Fat0g Cholesterol5mg2 % Sodium210mg9 % Total Carbohydrate3g1 % Dietary Fiber0g 0% Total Sugars2g Added Sugars0g 2% Protein1g Vitamin D0g0 % Calcium30mg 2% Iron0mg0 % Potassium60mg2 % Preparation & Usage Shake Well Features Made with Yogurt No Artificial Colors, Flavors or Preservatives Gluten Free 35 Calories per serving Product Number: 00071464022839 Ingredients Buttermilk (Cultured Nonfat Milk, Milk, Sodium Citrate, Vitamin A Palmitate), Filtered Water, Cucumber, Yogurt (Cultured Pasteurized Grade A Milk, Cream, Nonfat Milk, Pectin, Carrageenan), Soybean Oil, Whey Protein Concentrate, Reduced Acid Pineapple Juice Concentrate, Distilled Vinegar, Contains 2% or less: White Balsamic Vinegar, Salt, Buttermilk Powder, Onion Powder, Onion Powder, Garlic Powder, Natural Flavor, Citric Acid, Spice, Egg Yolk, Xanthan Gum, Cilantro, Mustard Seed, Black Pepper 35cal Calories 2g Total Fat 2g Total Sugars 210mg Sodium Nutrition Facts Per recommended serving 2 tbsp (30g) serving size 30 gram Amount Per Serving Calories 35 % Daily Values * Total Fat2g3 % Saturated Fat0.5g 3% Trans Fat0g Cholesterol5mg2 % Sodium210mg9 % Total Carbohydrate3g1 % Dietary Fiber0g 0% Total Sugars2g Added Sugars0g 2% Protein1g Vitamin D0g0 % Calcium30mg 2% Iron0mg0 % Potassium60mg2 %

So, this can be a good option if you're going to multiple events per month, but may not work if you just need a one-off formal dress
Preservation is optional to avoid fabric yellowing with age