900 × 600
Source:https://www.musebridals.com/products/lilac-tulle-a-line-v-neck-prom-dresses-with-side-slit-long-formal-dresses-mp794
288 × 192
Source:https://www.davidsbridal.com/dresses/formal-evening-dresses
1024 × 768
Source:https://jbydress.com/products/a-line-v-neck-emerald-green-satin-prom-dresses-emerald-green-v-neck-formal-graduation-dresses
3320 × 2000
Source:https://alyceparis.com/products/formal-dress-27475
1200 × 900
Source:https://www.ever-pretty.com/collections/formal-dresses
1024 × 768
Source:https://www.theknot.com/content/formal-wedding-attire
1435 × 1000
Source:https://alyceparis.com/
1024 × 683
Source:https://www.abcprom.com/products/shiny-v-neck-black-sequins-short-prom-dress-v-neck-black-homecoming-dress-sparkly-short-black-formal-evening-dress
1000 × 1013
Source:https://www.amazon.com/Evening-Dresses-Elegant-Backless-Cocktail/dp/B0C5X569KZ
585 × 390
Source:https://www.lulus.com/categories/299_2226/formal-dresses.html