A phrase quoted by individuals who believe their life constitutes that of an Instagram profile. A trusty film camera, mug of black coffee and a tennis skirt is all you need to characterise your morning as an "aesthetic morning".
Also: Used ironically to mock someone who believes their morning routine is 'aesthetic' (or) A mocking alternative to "aesthetic warning".
Tom: "Jasmine, those blueberry pancakes look really nice."
Jasmine: "Aesthetic mornings!"