The Once-ler Costume
How bad can you be in this iconic green suit?
The Once-ler is the ambitious, guitar-playing entrepreneur from Dr. Seuss's The Lorax who eventually lets greed take over. This costume guide focuses on his iconic, flashy green suit from the musical number "How Bad Can I Be?" which became a massive internet sensation. The look features a vibrant green tailcoat, a black top hat, matching green gloves, and sleek round sunglasses.
- Difficulty
- Medium
- Time
- ~30 min
- Budget
- $45–120
Try it on
See yourself as The Once-ler
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What you need for a The Once-ler costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete The Once-ler costume — one box instead of 7 pieces.
Green tailcoat or suit jacket
A vibrant, bright green tuxedo tailcoat or long blazer to anchor the flashy corporate look.
DIY: Dye an old white blazer or suit jacket using bright green fabric dye.
White dress shirt
A classic, crisp white button-down collared dress shirt worn under the jacket.
Green and black striped tie
A skinny necktie featuring diagonal green and black stripes.
DIY: Use black fabric marker to draw diagonal stripes on a plain green tie.
Dark grey dress pants
Sleek, slim-fit dark grey or charcoal trousers to balance the bright green jacket.
Black top hat
A tall, structured black felt top hat to complete his dramatic silhouette.
Green gloves
Bright green fabric or satin gloves that cover the hands and wrists.
Round green sunglasses
Retro, round-rimmed sunglasses with dark green tinted lenses.
Rather not assemble it? See ready-made The Once-ler costumes at Spirit Halloween ↗
How to put it together
- 1
Put on the white button-down dress shirt and button it all the way to the top.
- 2
Tie the green and black striped necktie snugly around the shirt collar.
- 3
Slip into the dark grey dress pants and secure them with a black belt.
- 4
Layer the vibrant green tailcoat over the white dress shirt.
- 5
Put on the bright green gloves, pulling them securely over your wrists.
- 6
Place the black top hat on your head, tilting it slightly forward for a confident look.
- 7
Slide on the round green sunglasses and step into black dress shoes to finish the outfit.
Makeup & hair
Style your hair into a messy, short, dark brown or black side-swept look, or use a short black cosplay wig. Keep makeup simple with a light dusting of faux freckles across the bridge of your nose and cheeks using a brown eyebrow pencil.
The Once-ler for couples, groups, kids & more
- couples
- Pair up with someone dressed as the Lorax in a bright orange jumpsuit with a massive yellow mustache.
- group
- Add friends dressed as Ted, Audrey, and a Truffula Tree to form a complete ensemble from the movie.
- kids
- A simplified version with a green blazer, grey jeans, and a plastic black top hat.
- Plus size
- Opt for a stretch-material green blazer and comfortable charcoal dress pants for an easy, flexible fit.
- pet
- Dress your pet in a small orange sweater with a yellow felt mustache attached to the collar.
Tips
- Choose a lightweight tailcoat if you plan to wear this costume indoors or at a crowded convention.
- Keep a guitar strap or a small plush Truffula Tree as a prop to make the character instantly recognizable.
- Ensure your sunglasses aren't too dark if you are wearing the costume at night or in low-light party settings.
The Once-ler costume FAQ
- What color is the Once-ler's suit?
- In his most famous 'How Bad Can I Be?' look, the Once-ler wears a vibrant, bright green tailcoat jacket with dark grey pants.
- Can I do his early-movie look instead?
- Yes, his early look consists of a grey fedora, a grey vest over a white shirt, grey striped pants, and green gardening gloves.
- What props should I carry with this costume?
- An acoustic guitar, a pink fluffy 'Thneed' scarf, or a small Truffula Tree sprout are perfect props for this character.
Did you know? The 2012 animated version of the Once-ler unexpectedly became a massive internet phenomenon on Tumblr, earning him the title of one of the original 'Tumblr Sexymen.'