Autumn bottom refers to the visual masterpiece that is seen when a woman wears leggings or yoga pants with a baggy sweater or long shirt. This generally takes place in the fall when the weather dips below 70 degrees. In certain regions fall is known as "autumn bottom season". This time of year gives women the opportunity to be comfortable and professional looking while showing off what they're working with.
"I cannot wait to go to the fair and check out all of the autumn bottoms".