Jitters

During rain (if not using umbrella): Raincoat (Green) & outdoor hat (Light blue)
During snow: Down jacket (Yellow) & knit hat (Ochre)
Sleepwear and if sick: PJ outfit (Green) & terry-cloth nightcap (Cream)
While exercising: Athletic jacket (Green)
While doing yoga: Tank (Navy blue)
While sunbathing: Triangle shades
Fishing Tourney: Athletic jacket (Green) & mesh cap (Yellow)
Bug-Off: Athletic jacket (Green) & mesh cap (Yellow)
Bunny Day: Stone-egg outfit & stone-egg shell
Halloween: Flashy animal costume (Orange) & flashy round-ear animal hat (Orange)
Turkey Day: Straw boater (Brown)
Turkey Day (chef): Chef's outfit (Yellow) & chef's hat
Toy Day: Santa hat
Countdown: Doublet (Green) & rhinestone shades (Purple)
Birthday & Wedding Season photoshoot: Doublet (Green) & rhinestone shades (Purple)

Happy Home Paradise DLC exclusive clothing
As a student for the school: School uniform with necktie (Navy blue)
As the teacher for the school: Checkered sweater vest (Light brown) & rimmed glasses (Black)
As the cashier/employee for the restaurant: Café uniform (Green)
As the chef/apprentice for the restaurant: Chef's outfit (Yellow)
As a staff for the café: Diner apron (Yellow)
As the receptionist for the hospital: Nurse's jacket (Blue)
As the doctor for the hospital: Doctor's coat (Red necktie)
As a patient for the hospital: PJ outfit (Green)
As the shop manager for the apparel shop: Staff uniform (Yellow)
While practicing hula: Pineapple aloha shirt (Orange) & hibiscus hairpin (Yellow)
While floating in the ocean: Leaf-print wet suit (Yellow) & pilot shades (Gold)
During DJ KK's concert: Tropical cut-and-sew tank (Orange) & neon shades (Orange & lime)