When she performs as a clown, she wears a yellow vest, a green and white long-sleeved shirt with black stripes, purple pants with patches, brown shoes, a green bowler hat with a purple band, an orange wig, a pink bow tie, white gloves, and a red clown nose.
Luan dresses up like a mime from time to time. This outfit consists of a black beret, a horizontal striped shirt with matching socks, black pants, black shoes, a yellow scarf (pink scarf in "Funny Business"), eyeliner, white gloves (Luan only wears the gloves in "Funny Business") and a cane. The first time she wears the outfit is in "Ties That Bind" when the kids think their parents are going to kick them out of the house. Luan puts away Mr. Coconuts and puts on her mime act to keep quiet. The second time is in "Funny Business", when she hears that Lincoln is performing at a birthday party for Maggie, an emo teen. When Lincoln's clown act bombs, Luan helps him out by performing a dual mime act with him, earning the emos' praise. She then wears it in "L is for Love" with Benny.
In a flashback to when Lincoln's sisters treat him to a high degree over a minor papercut, Luan dresses up in a doctor's outfit with a clown nose, reminiscent of Robin Williams in his role as Patch Adams.
In Lincoln's fantasy about being at the grown up table, Luan, like everyone, dresses in fancy attire. Her outfit consisted of a white shirt with short sleeves and a yellow blouse. It's not much different from her usual outfit.
She wears a yellow bathrobe and bunny slippers to start off her day.
Like Luna, Lynn, Lana, and Lisa, she wears an udder hat to represent their choice of Dairyland for their family vacation and encourage Lincoln to pick it.
She also dresses up as the park mascot Tippy, a character Lincoln loves. She gives Lincoln his folded laundry and an udder hat to coax him.
Like in "A Tattler's Tale", she dresses up like a jester when performing at a medieval themed birthday party. She later wears it in "L is for Love", while rehearsing for a school play.
In a flashback when Luna gave her a hand-me-down bike now turned into a unicycle, Luan wore a sleeveless shirt that matched her skirt, white socks, and brown slip ons. She also did not have her gag flowers anywhere. When riding her unicycle, she wore a pink helmet with polka dots.
When the kids all have to cover for each other by dressing up as different siblings, first, she dresses up like Leni, confusing her and getting the two of them into a mirror routine.
She then dresses up like Lucy. When their parents found out about their little charade, their punishment was to go about their tasks while still dressed as the siblings they covered. She had to go back to the birthday party at which she was performing as a clown, in her Lucy costume. However, this frightened the kids she was performing for as bats flew out of her costume.
She wears a pink cowboy shirt, a leather cow-print cowboy vest, a yellow bandana, blue pants, yellow leather chaps with fringes, white cowboy boots, and a tall white cowboy hat with a pink band, when reenacting the pioneer days.
Luan has her hair styled in a bun, and is wearing white office shoes with no socks, a plain yellow skirt, a black blazer, a white button down shirt, and a rose colored bow tie, and carries a brown briefcase.
While helping Rita by acting 'perfect', Luan wears a light blue shirt with puffy sleeves and white collar, a blue pleated skirt, white knee-high socks and black Mary Janes. Her normal scrunchie is replaced by a blue ribbon.
Luan's outfit during Flip's comedy is shown to be a yellow undershirt with a long sleeved white jacket with yellow plaid cuffs and a pink flower on it. She also retain her yellow plaid skirt but wears white knee-high socks with brown flats that has pink flowers on them.
After being woken up by Lynn Sr's Gong, Luan is seen wearing her yellow and plaid long-sleeved pajamas but this time with no bunny slippers and wears a pink sleep mask similar to Leni's.
In "It's Just a Phase", she is seen as a baby wearing a scrunchie like her usual one, a clown's nose, a yellow T-shirt, a white diaper, yellow socks, and shoes like her usual ones.
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