It's not the first time the company has tried to accommodate the growing girth of passengers.

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Airbus started offering "extra wide seats" for the A320 jets in 2012, according to the company. It made the window and middle seats an inch smaller in order to squeeze in a 20-inch-wide aisle seat.

 "This innovative layout responds to the needs of travelers that are larger physically, and provides added convenience for other passengers," according to Airbus.