Alex Russo's style has developed and changed a lot over the years.
Season One
Alex in Season 1.
In Season One, Alex's style is funky. She is quick to ridicule everyone else's clothes, which is prominent in the Funky Hat Song she sings with Harper.
Clothes
Alex usually wore multiple layers of shirts. She wore a variety of bottoms, which changes length and/or type in each episode. If she wore a skirt, she would also wear tights or leggings. She loves to get new clothes, often times taking money from her family members and going out to shop.
Shoes
In the first season, Alex always wears high tops, possibly Converse, or leather boots. Sometimes, she wore calf-high Converse. In Quinceañera , she is showed hating to wear high heels, but to Season 3 and 4 she normally wears heels.
Accessories
Funky hats were the main accessory of this season. Alex wore nature-like necklaces (trees, flowers, etc.), knitted gloves, studded belts and bracelets, knee-high socks, and colorful hair extensions.
Season Two
Alex Russo in the Season 2 promo.
In the second season, Alex updates her looks, no longer wearing multiple layered shirts. Normally only wearing two layers of sleeveless shirts. Her style is still tomboy, but more edgy.
Clothes
Alex wears either frilly or ruffled sleeveless shirts, to show her shoulder, and matches her short. Whenever she is out, she only covers herself with a leather jacket, or a knitted sweater. She wears skinny jeans or skirts with leggings/tights underneath. Alex wore plenty of graphic t-shirts throughout the season.
Shoes
Alex wears brown (or black) cowboy boots with heels, where she keeps her wand. Sometimes, she wore colorful Converse with decorated laces.
Accessories
In nearly every episode, Alex wore an accessory with a peace sign such as necklaces, scarves, or rings.
Season Three
Alex during season 3.
In season three, Alex changes her clothes completely. Her style became more dramatic and sophisticated.
Clothes
She usually wears skinny jeans, either neon colored or plain, long sleeved blouses, with the sleeves ruffled or lose by the end. Or sleeveless dresses, with a tank top or a shirt and a pair of jeans
Shoes
Unlike season one and two, Alex started to wear heels. She wore wedges, knee-high boots, and three-inched heel boots. Occasionally she wore Converse.
Accessories
Like season two, she wore many scarves, necklaces, big bracelets, and rings.
Season Four
In season four, Alex's wardrobe became more feminine and mature.
Clothing
Similar to season three, Alex wears ruffled shirts or tanks, laced tops, vests, and dresses. Floral became a theme of her clothing. Throughout the season, she wore many striped tops. As usual, she wore skinny jeans or jeggings.
Shoes
Heels and boots have became Alex's favorite footwear.
Accessories
SImilar to season three, Alex wore scarves, belts, bracelets, and necklaces. This was the only season that she wore a headband in many episodes.