Mathilda from Léon: The Professional Halloween Costume

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Leon and Mathilda from Leon: The Professional Halloween couples' costume

Two Halloweens ago, my longtime #goals to dress as Mathilda from Luc Besson’s 1994 film Léon: The Professional finally came to fruition, after much daydreaming and last-minute scrambling. I had trouble finding good resources online for how to put together a Mathilda costume, so I decided to write a blog post about how I did it, so that you, too, can dress like a little girl assassin.

Two notes in advance:

  1. Instead of faithfully reproducing specific outfits à la cosplaying, I decided to pull together iconic elements of the character’s looks, for maximum recognizability.
  2. All screencaps are from

Without further ado…

Here’s what you’ll need to dress as Mathilda, as played by Natalie Portman in Léon: The Professional:

Leon: The Professional - Natalie Portman - Mathilda - Halloween costume cheat sheet how-to DIY -

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Halloween Costume Cheat Sheet:



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  • a black lace-up top OR a striped crop top OR a black scoop neck top
  • a black or light blue denim miniskirt or short shorts
  • an oversized army green bomber jacket
  • off-white socks you can scrunch down
  • black or brown flat booties


  • a red beanie
  • round-frame sunglasses
  • a black velvet choker with a silver sun charm
  • a potted plant
  • a brown paper bag


  • a super short dark brown bob with stringy bangs
  • contouring/highlighting eyeshadow (and/or other skin makeup)

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Basically we’re going for a mix of these two iconic outfits:

Leon: The Professional (1994) dir. Luc Besson - Natalie Portman - Mathilda - Halloween costume - striped top, choker

Leon: The Professional (1994) dir. Luc Besson - Natalie Portman - Mathilda - Halloween costume - green bomber jacket, red beanie

We’re gonna be taking the top outfit and layering on the appropriate accessories and outerwear from the bottom outfit for an iconic Mathilda Looque™.

Now for a detailed breakdown!

Let’s start with Mathilda’s clothing.