The eldest Kardashian sibling is known for her chic sense of style and super-smart ensembles, but lately she has ditched her fancy blouses and pencil skirts for a number of uncharacterically casual outfits.
On Tuesday (3 December), Kourtney was spotted the airport in Los Angeles with longtime boyfriend Scott Disick in a low-key getup of grey jogging bottoms, a white T-shirt and a pair of comfy Nike Trainers.
She also wore her trusty leather jacket and kept her peepers covered with a pair of sunglasses.
Meanwhile, Scott - who has been dressing more laid back this year as well - covered up in a grey hoody, black jogging bottoms and a baseball cap.
Since the couple are sometimes partial to co-ordinating their outfits (they wore similar check shirts at an airport last month), Scott donned the same pair of Nike trainers as Kourtney, though his were grey.
Absent from the twosome's side were their children Mason and Penelope.
Kourtney, 34, and Scott have been keeping busy jetting back and forth across the States in recent weeks.
Last month, they were pictured enjoying some quality time together in New York, heading out for date nights and meeting up with old friends.
But it sounds like all this travelling may have taken it's toll on the reality TV favourites, as Kourtney admitted to feeling ill over the weekend.
She posted a cute picture of herself and her beau waiting for a flight on Sunday (1 December) and wrote: "Sick at the airport on the busiest travel day of the year. Fun times."
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