"The design of the Kelly bag borrows elements from Hermes’ firstborn the HAC, which is otherwise known as ‘Haut a courroies’ and designed to perfectly fit and carry a saddle! Then in 1928, the bag evolved into a business bag, perfect for carrying important paperwork. Particularly loved by businessmen, politicians, and writers (think JFK and Winston Churchill). It was referred to as the ‘Sac a depeches’ – a temporary name for this iconic work bag. Finally, in the mid-1950s, then pregnant Grace Kelly used her Kelly bag to shield her belly from the paparazzi. Amidst the chaos, her sheer grace (if you will) immediately elevated this bag into a must-have. Today, whether you invest in a Kelly Sellier or Retourne, the Kelly bag remains one of the smartest investment pieces you can get. Kelly sizes from biggest to smallest include 35, 32, 28, 25, and 20. "