Last updated: August 9, 2026· By Seckin Peker

Halloween Costume Guide

Olive Penderghast From Easy A Halloween Costume Guide

She invented a rumor to get out of an awkward weekend. The corset and the patch are her leaning all the way into it.
ComedyCorsetHigh Schoolred hair women
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Quick Answer: The Olive Penderghast costume comes down to the black lace bustier and the red letter A patch pinned to it.
  • Black Lace Bustier (essential)
  • Red Letter “A” Iron-On Patch (essential)
  • Wavy Auburn Wig
  • Black Jeans
  • Pearl Necklace

Olive spends most of Easy A managing a rumor about her own sex life that she invented to get out of an awkward lie, then leans into it once the whole school decides who she is. The black bustier with the red letter A pinned to it is the moment she stops being anonymous and starts performing the reputation everyone gave her. The film is a loose modern retelling of Nathaniel Hawthorne’s The Scarlet Letter (Wikipedia), and the visual is specific enough that most people who have seen the movie will place it on sight, even if they have not thought about the book since high school.

Items Total9 Items
DifficultyEasy
VibePreppy Rebellion
Cost$70-$190

Olive Penderghast Halloween Costume Items

Olive Penderghast Halloween costume infographic showing black lace bustier, red letter A patch, auburn wig, black jeans, pearl necklace, cat eye sunglasses, shoulder bag, and ankle boots

Olive Penderghast Costume Items

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Olive Penderghast Easy A High School Emma Stone
  • 1 Black Lace Bustier (essential)This is the central piece of Olive’s scandal-era wardrobe. Get one with a corset-style front, not a soft bralette cut, the structure is part of the reference. Sew a couple of small black bows onto it beforehand rather than pinning them, pins tend to fall out over a few hours.
    See on Amazon
  • 2 Black Hair BowsSew a couple onto the bustier’s lace trim rather than clipping them into hair, that matches the film’s detailing better.
    See on Amazon
  • 3 Wavy Auburn Wig (essential)Recreates Emma Stone’s shoulder-length wavy hairstyle from the film. Get a warm auburn shade rather than bright red, her hair color in Easy A reads more auburn than orange-red, and the wrong shade throws off the whole reference.
    See on Amazon
  • 4 Black JeansCheck your closet first, any plain black skinny or straight jean works underneath the bustier.
    See on Amazon
  • 5 Red Letter “A” Iron-On Patch (essential)This is the actual joke of the costume, the Scarlet Letter reference pinned to her chest. Apply it to the left breast of the bustier. Without it, this reads as generic goth-prep, not Olive specifically.
    See on Amazon
  • 6 Pearl NecklaceA classic white pearl strand adds the preppy contrast against all the black. Layer it short, close to the collarbone.
    See on Amazon
  • 7 Black Vintage Cat Eye SunglassesAdds her defensive, over-it attitude for the walking-through-the-hallway scenes. Optional if you want your face fully visible.
    See on Amazon
  • 8 Black Shoulder BagHer everyday school bag, carried over one shoulder. Any plain black slouchy bag works here.
    See on Amazon
  • 9 Black Leather Ankle BootsLow-heeled and simple. Check your closet before buying, most black ankle boots will pass.
    See on Amazon
Olive Penderghast in the black bustier with the red letter A patch from Easy A, reference image for the Halloween costume

How to Style the Olive Penderghast Halloween Costume

The red A patch is what people look for once they clock the corset, and if it is missing or too small, the costume just reads as a generic dark-academia outfit instead of Olive specifically. At a crowded party, a bustier without the patch gets read as a dozen other things before anyone lands on Easy A. The pearls do more work than people expect, that one soft, preppy detail against all the black is what makes the look feel like a deliberate performance rather than an accident.

Olive narrates her own scandal through a webcam confessional, deadpan and increasingly unbothered, explaining a rumor she made up getting bigger every day. That is the tone to bring if anyone asks about the costume: mildly amused that this got so out of hand.

Get the patch placement right before the party, not during

Iron or sew the A onto the exact upper-left position ahead of time. Pinning it on last minute at a party means it will drift or fall off within an hour, and a crooked or missing patch is the difference between “Olive” and “person in a corset.”

Match the wig shade before you commit to red

A too-bright red wig reads more like a different redhead character entirely. Order the auburn wig early enough that you can return it if the shade looks wrong under indoor lighting.

Olive Penderghast Group Halloween Costume Ideas

Group Idea: Iconic High School Movie Girls

Olive, Elle Woods & Blair Waldorf

Excellent group for a crowd that grew up on 2000s and 2010s teen media, since all three looks are visually distinct and instantly placeable on their own. Elle’s all-pink look and Blair’s headbands give enough contrast against Olive’s all-black corset that the group reads clearly even from across a room.

Olive Penderghast Elle Woods Blair Waldorf

Duo Idea

Olive & Todd Kelly

Might work, but only for people who know the movie well, since Todd is a fairly minor character outside of the film’s ending. The payoff is really just for the two of you and anyone who has seen Easy A recently.

Olive Penderghast Todd Kelly

Group Idea: Literary Scandal Heroines

Olive & Hester Prynne

Might work, but it needs an explanation to land at most parties. Pairing Olive with an actual Scarlet Letter-era Hester Prynne costume is a smart reference for English majors and a confusing one for everybody else.

Olive Penderghast Hester Prynne
Olive Penderghast full costume look from Easy A with bustier, wig, and jewelry, reference for group costume pairing

Olive Penderghast Halloween Costume DIY Tips

Building the Look

The corset and the patch are worth ordering ahead. Everything else is either a thrift find or something already in your closet.

  • Black lace bustier: order this early, sizing on corset-style tops runs differently across brands.
  • Letter A patch: iron-on or sewn both work, just get the placement right, upper left chest.
  • Wig: buy this, matching natural red hair to the exact auburn shade is unreliable.
  • Black jeans and boots: check your closet first.
  • Pearls and sunglasses: cheap thrift or costume shop finds, no need to spend much here.

Playing Olive at the Party

Olive narrates her own scandal like she is slightly amazed it keeps escalating. Dry, self-aware, never actually embarrassed.

  • If someone asks about the letter, explain the rumor you started like you are still a little surprised anyone believed it.
  • Deliver every explanation like a webcam confessional, straight to camera energy even without a camera.
  • She is in control of the narrative the whole time. Play it unbothered, not defensive.

Olive Penderghast Halloween Costume: FAQ

Wear the black lace bustier with the red letter A patch pinned to the left breast, that combination is the whole costume. Add the wavy auburn wig, black jeans, and pearl necklace, then finish with cat eye sunglasses and black ankle boots.

Yes, mostly because the visual is so specific. A corset with a red A patch does not read as anything else, so even people who have not seen Easy A in years will recognize the reference once they see the wig and the patch together.

A DIY felt letter works fine as long as it is red and pinned in the same spot, upper left chest. The placement matters more than the material.

The auburn wig handles that, you do not need your natural hair color to match. Get a shoulder-length wavy wig in a warm auburn shade rather than bright red, Emma Stone’s hair in the film reads more auburn than red.

Check your school’s dress code first, since a corset-style top may not be allowed regardless of the movie reference. A blazer over black jeans with just the letter A patch is a more modest alternative that still reads clearly.

You can, but the costume relies more heavily on hair color without it. If you already have auburn or red hair, skipping the wig is fine. Otherwise the wig is doing real recognition work here.

Olive is played by Emma Stone (IMDb), in one of her first lead film roles.

What letter does Olive pin to her bustier in Easy A?

Easy A is a modern retelling of which classic novel?

Who plays Olive Penderghast in Easy A?