Chloé is a slender teenage girl of medium height. She has brilliant cobalt blue eyes, pale pink lips, and light honey blonde hair. Her hair is parted in the middle and pulled back into a high ponytail, held in place by a white hair tie.

As a civilian, she is often seen wearing makeup, including pale, light grayish cerulean eyeshadow, pale, light pink lip gloss, and a light scarlet blush. For accessories, she wears a gold chain necklace with a small gold disco ball and white-rimmed sunglasses on her head. Chloé wears a sparkly, brilliant yellow bolero that goes halfway down her forearms with a light blue button on the left side and two pockets, over a white shirt with black stripes around the chest running down to the waist. The rest of her outfit includes white jean capris with a golden belt featuring pyramid-shaped bumps, and white dress shoes adorned with white bows with black lining and soles.

As "Queen Bee," she wears a yellow and black domino mask. Her hair is styled in a ponytail curled to resemble a bee's stinger at the ends, tied with a black hairband, with two black antennae-like ribbons sticking out from the hairband, and a streak of black hair curled into her ponytail. The Bee Miraculous comb is placed on the upper right side of her head next to the hairband. Queen Bee's outfit consists of a yellow skin-tight jumpsuit made up of many tiny hexagonal patterns to resemble a honeycomb, with a black turtleneck collar, three black stripes on her torso (including a large black one covering her rib cage and two on the upper thigh). The sleeves of her suit are black and end in gloves with yellow fingers. Her black boots cover the length of her lower legs, starting directly below the second stripe on her thigh and ending with yellow high platform soles. She has her weapon, the spinning top, tied around her waist. The similarities between her suit and Ladybug's suit designs could be an allusion to her adoration of the latter.

Chloé is a bossy, egotistical, and superficial girl who goes out of her way to make others miserable, especially her rival, Marinette, whom she openly despises. She often refers to Marinette by her surname just to irritate her. Chloé thinks highly of herself and looks down on everyone else, firmly believing she deserves everything and taking great pride in her luxurious lifestyle. This inflated sense of entitlement leads her to believe she is above the consequences of her actions.

Convinced that she is the most important person in the world and that everyone adores her, Chloé’s behavior is largely driven by a desire to impress her mother, who has shown little care or affection for her. In her pursuit of attention or revenge, she is willing to resort to manipulative or underhanded tactics to get what she wants.

She rarely treats her peers with respect and is especially domineering toward her so-called best friend, Sabrina. Chloé even admitted to her mother that she was merely using Sabrina. Her sour attitude is evident in her interactions with those she dislikes, though she sometimes feigns innocence or emotional vulnerability to manipulate others, particularly in front of her father.

Although she acts callously and selfishly, Chloé is also cowardly, easily frightened by danger, especially during attacks by akumatized villains. Ironically, her behavior often causes people to become akumatized in the first place. When these victims seek revenge, she is horrified and confused, refusing to take responsibility for her actions and narcissistically dismissing their grievances.

Chloé frequently acts like a "daddy’s girl," taking full advantage of her father’s indulgence. She often calls on him or threatens to enforce her will over her peers and even her own superiors.

"Go on, rugrats! Don't forget to take your thumbs out of your mouths!" —Chloé Bourgeois