Boo Costume Guide

Halloween is the perfect time to dress up as your favorite fictional character, and one of the most beloved characters from Disney's "Monster Inc." is Boo. This adorable little girl stole our hearts with her innocent charm, and now you can bring her to life with this easy Halloween costume guide.

Boo Costume Essentials

You will need the following items for your Boo Halloween costume:

  1. Dark Rose T-Shirt Dress
  2. Light Purple Seamless Leggings
  3. White Ankle Running Socks
  4. Butterfly Ball Hairbands
  5. Boo Toddler Costume

Boo, whose real name is Mary Gibbs, is an integral character in the 2001 Disney/Pixar classic, "Monsters, Inc." At the tender age of two, Boo, a young human toddler possibly of Asian heritage, captures hearts with her limited yet expressive vocabulary, typical of her age. Targeted for abduction by the character Randall, Boo skillfully avoids capture, becoming central to the story as Mike and Sulley endeavor to protect her.

For those looking to replicate Boo's look, choose a delightful outfit consisting of a rose-colored t-shirt dress, paired with light purple leggings and white socks, perfectly capturing her adorable and innocent style.

How To Dress Like Boo From Monsters Inc

Boo Halloween Costume

Dressing up as Boo from "Monsters Inc." is all about capturing the essence of her charmingly simple and childlike style. This costume is perfect for those who want to embody the innocence and joy of one of Disney's most adorable characters. Let's break down the costume into easy-to-follow steps.

Step 1: The Perfect Nightdress

Start with a dark rose t-shirt dress, which is the key element of Boo's costume. Look for a comfortable and soft dress that matches the color and style of Boo's in the movie.

Step 2: Leggings and Socks

Pair your dress with light purple seamless leggings to replicate Boo's look. Add white ankle running socks, which are both practical and true to the character's style.

Step 3: Signature Pigtails

Boo's hairstyle is iconic. Style your hair in two high pigtails, using butterfly ball hairbands for an authentic touch. If your hair is shorter, consider using extensions to achieve this look.

Step 4: Minimal Makeup

Since Boo is a young child, minimal makeup is appropriate. A light foundation and a touch of blush to mimic a child's rosy cheeks will do. Remember, the goal is to look as youthful and innocent as Boo.

Step 5: Accessorizing with "Kitty"

Finally, don't forget Boo's beloved toy, "Kitty." Carry a small plush cat to complete your costume, or get creative with a homemade version to bring a personal touch to your outfit.

Boo Cosplay

Scheana Shay as Mike husband Brock Davies as Sulley and her daugther Summer as Boo
Scheana Shay as Mike ,husband Brock Davies as Sulley, and her daugther Summer as Boo

Embodying Boo at a Halloween party means capturing her curious and naive personality. Boo's character is all about the wonder and innocence of a child's perspective. Here's how you can bring her character to life.

How to Act Like Boo at a Halloween Party:

Step 1: Embrace Childlike Wonder

At the party, let your curiosity lead the way. Show fascination and excitement for the new and unknown, just like Boo would in the monster world.

Step 2: Practice Boo's Vocabulary

Boo has a limited but memorable set of phrases. Practice saying "Boo!", "Kitty!", and "Mike Wazowski!" in her adorable voice. Use these phrases to interact with others at the party.

Step 3: Show Your Playful Side

Boo is playful and loves to have fun. Engage in games, dance, and don't be afraid to show your childish, joyful side.

Step 4: Express Innocence

Boo's innocence is a big part of her charm. Show this through your actions and reactions – be amazed by the simple things, and don't be afraid to show your genuine emotions.

Step 5: Be Friendly and Lovable

Finally, be as friendly and lovable as Boo. Smile often, be approachable, and make friends easily, just like she does with Sulley and Mike in the movie.

By following these steps for dressing and acting like Boo, you'll not only look the part but also bring the heartwarming spirit of this beloved character to your Halloween festivities.

About Boo from Monsters Inc.

About Boo

Diving into the character of Boo from "Monsters Inc." reveals a depth beyond her initial appearance as a cute, little girl. This section explores the nuances and charm of Boo, a character who plays a pivotal role in the storyline of one of Disney's most beloved films.

Boo's Background

Boo, whose real name is Mary Gibbs, is a significant character in Disney/Pixar's 2001 film "Monsters, Inc." At just two years old, Boo embodies the innocence and curiosity of childhood.

Her Role in the Story

Initially targeted by the antagonist, Randall, for her scream energy, Boo inadvertently finds herself in the monster world. Her presence there challenges the monsters' beliefs about human children being toxic and dangerous.

Personality Traits

Despite her young age, Boo is notably curious and highly expressive. Her limited vocabulary, consisting of phrases like "Boo!", "Kitty!", and "Mike Wazowski!", adds to her endearing character. She is also surprisingly resilient and adaptable, quickly forming a strong bond with Sulley and Mike.

Physical Appearance

Boo is characterized by her petite frame, dark brown hair styled into pigtails, and large brown eyes. Her signature outfit is a dark rose nightdress, purple leggings, and white socks, reflecting her youthful innocence.

Impact on the Monsters Inc. Universe

Boo's interaction with Sulley and Mike leads to a significant shift in the monster world. Her fearlessness and affection towards the monsters play a crucial role in changing how monsters perceive and interact with human children.

Understanding Boo's character is essential for anyone looking to accurately portray her for Halloween. Her mix of innocence, bravery, and childlike wonder makes her a memorable and beloved character in the Disney/Pixar universe.

Read more about Boo on:

Pixar Wiki

Disney Wiki

Who Should Consider the Boo Costume Idea

Boo Cosplay

Choosing the right Halloween costume is an exciting part of the celebration. The Boo costume from "Monsters Inc." is a delightful option, but it resonates more with certain individuals. Let's explore who would most enjoy stepping into the shoes of this beloved character.

Children and Child-at-Heart Adults

Boo's costume is perfect for young children due to its simplicity and comfort. It's also a great choice for adults who wish to revisit the joys and innocence of childhood.

Fans of "Monsters Inc." and Disney

If you're a fan of "Monsters Inc." or Disney in general, dressing as Boo allows you to celebrate your love for these iconic stories.

Individuals Who Prefer Comfortable Costumes

Those looking for a comfortable, hassle-free costume will find Boo's outfit ideal. It's simple, doesn't require elaborate makeup or accessories, and is perfect for long hours of wear.

People Who Enjoy Being Recognizable Characters

Boo is a well-known and loved character, making this costume a great conversation starter and instantly recognizable at any Halloween event.

Who Should Think Twice About the Boo Costume Idea

Boo in her monster costume
Boo in her monster costume

While the Boo costume has its appeal, it might not be the right fit for everyone. It's important to consider various factors before deciding. Here's who might want to think twice about choosing this costume.

Those Seeking an Elaborate Costume

If you prefer a more intricate or elaborate costume, Boo's simple outfit might not meet your expectations.

Adults Seeking a More Mature Look

Adults looking for a more sophisticated or edgy Halloween costume might find Boo's childlike appearance too innocent for their taste.

Fans of More Action-Oriented Characters

If you're drawn to characters with more dynamic or action-oriented roles, Boo's character, which embodies innocence and vulnerability, might not align with your preference.

Individuals Who Prefer Making a Bold Statement

For those who enjoy making a bold statement with their Halloween attire, the subtle and sweet nature of Boo's costume might not provide the impact they're looking for.

In sum, the Boo costume from "Monsters Inc." is a charming and comfortable choice, ideal for those who love the character and prefer simplicity. However, it's essential to consider your personal style and what you want to express this Halloween before settling on this adorable costume.

Additional Tips for Your Boo Costume

Dress Like Boo

Creating a memorable Boo costume from "Monsters Inc." involves more than just the basics. To truly bring the character to life and ensure comfort throughout your Halloween festivities, consider these additional tips.

Securing the Pigtails

To keep Boo's iconic pigtails in place all night, use sturdy hair ties and bobby pins. If using extensions for added length, ensure they're securely attached.

Choosing the Right Footwear

Since Boo is often barefoot or in socks in the movie, opt for comfortable white sneakers or similar footwear that keeps in line with the costume and ensures comfort.

Face Painting for Added Fun

For a playful addition, consider adding some simple face painting, like a few whiskers or a cute nose, to enhance the childlike wonder of Boo's character.

Creating a DIY "Kitty" Accessory

If you don't have a plush cat, make a "Kitty" accessory using felt or cardboard. This can be a fun and creative part of your costume preparation.

Layering for Weather

If Halloween night is chilly, layer with a white or light-colored long-sleeve shirt under the t-shirt dress and thicker leggings to keep the Boo look while staying warm.

Group Costume Ideas Alongside Boo

Boo, Sulley and Mike
Boo, Sulley and Mike

Group costumes can add an extra layer of excitement to Halloween. Teaming up as characters from "Monsters Inc." alongside Boo can create a fantastic and cohesive group theme.

Monsters Inc. Characters

Dress up with friends as other characters from the movie, like Sulley, Mike Wazowski, and even Randall. This creates a fun and recognizable group ensemble.

Classic Disney Characters

Expand the theme to include other classic Disney characters. Friends can dress up as characters from various Disney movies for a magical and diverse group.

Other Pixar Characters

Consider a group theme with characters from different Pixar movies, such as "Toy Story," "Finding Nemo," and "The Incredibles." This allows for a wide range of characters and creativity.

Adorable Monsters Theme

Create a group theme of cute and friendly monsters. This broader theme lets your group be creative while still complementing the "Monsters Inc." universe.

By following these additional tips and considering group costume ideas, your Boo costume will not only be adorable and authentic but can also be part of an exciting and memorable group theme.

Boo Costume FAQs

When it comes to creating a Boo costume from "Monsters Inc.," several questions may arise to ensure authenticity and comfort. Here are answers to some frequently asked questions about assembling a Boo costume.

  1. What Fabric is Best for Boo's Dress?
    • Choose a soft, comfortable fabric like cotton for Boo's dark rose t-shirt dress. Comfort is key, especially if the costume is for a child.
  2. How Can I Make My Hair Look Like Boo's?
    • If you have long hair, create two high pigtails and secure them with butterfly ball hairbands. For shorter hair, consider temporary hair extensions.
  3. Can Adults Successfully Pull Off a Boo Costume?
    • Absolutely! While Boo is a child character, adults can embrace her playful spirit. The costume's simplicity and comfort make it a great choice for all ages.
  4. What Type of Shoes Should I Wear?
    • Since Boo is often seen in socks, comfortable white sneakers or similar soft shoes are ideal. They keep in line with the character while ensuring your comfort.
  5. Is Face Paint Necessary for the Boo Costume?
    • Face paint isn't necessary, but it can add a fun, childlike element. Simple designs like whiskers or a cute nose can enhance the playful nature of the costume.
  6. How to Make a "Kitty" Accessory?
    • Use felt, fabric, or cardboard to create a simple cat figure. This DIY project adds a personal touch to your Boo costume and is a fun activity.
  7. Any Tips for Makeup for Boo?
    • Keep makeup minimal. A touch of blush for rosy cheeks and light mascara can be enough, emphasizing Boo's youthful innocence.
  8. How to Keep Warm in the Boo Costume?
    • Layer with a white long-sleeve shirt underneath the dress and opt for thicker leggings if celebrating in colder weather.
  9. Suggestions for Costume Durability?
    • Choose durable fabrics and secure hair accessories well. If the costume is for a child, ensure it's easy to clean and withstands active play.
  10. Can the Boo Costume Work for Themed Parties Beyond Halloween?
    • Yes, the Boo costume is versatile for Disney-themed parties, children's birthday parties, or any costume event where playful and iconic characters are celebrated.


Crafting a Boo costume from "Monsters Inc." is a delightful way to celebrate Halloween. With its simplicity, comfort, and charm, it's a costume that brings joy and nostalgia. Whether for a child or an adult embracing their inner child, Boo's costume is about capturing the essence of innocence and wonder. Remember, the best costumes are those that not only look great but also make you feel fantastic and comfortable in character. Have a magical time bringing Boo to life!

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