Serena began the series wearing simple black sneakers with a pink pokeball design on the heel. As the series progressed, she gained more confidence and decided changed her look. She swapped out the sneakers for calf-high tight brown boots to help show her newfound inner strength. Serena is almost never seen without thigh-high black stockings covering her legs.
During pokemon contests, she wears several different shoes, including knee-high green boots and stylish pink flats.
Pokemon XY Arc
Episode 25: Climbing the Walls
Episode 39: Day Three Blockbusters
Episode 53: A Race For Home!
Episode 59: Under The Pledging Tree!
Episode 60: A Showcase Debut!
Episode 64: Battling With Elegance And A Big Smile!
Episode 71: So You're Having A Bad Day
Episode 80: Performing With Fiery Charm!
Episode 89: A Frolicking Find In The Flowers
Episode 90: Tag Team Battle Inspiration!
Pokemon XYZ Arc
Episode 2: Love Strikes! Eevee, Yikes!
Episode 8: A Dancing Debut!
Episode 16: Master Class Choices
Episode 20: Performing A Pathway To The Future!
Episode 27: All Hail The Ice Battlefield!
Movie: Volcanion and the Mechanical Marvel
Episode 45: The First Day Of The Rest Of Your Life!
Episode 47: Till We Compete Again!