Phineas and Isabella Costume
Bring Disney's most creative duo to life with these easy outfits.
Phineas Flynn and Isabella Garcia-Shapiro from Disney's Phineas and Ferb make the perfect nostalgic couples costume. This look captures Phineas's signature bright stripes and Isabella's classic Fireside Girls-inspired pink dress. It is a highly recognizable, fun, and comfortable choice for couples or best friends.
- Difficulty
- Easy
- Time
- ~30 min
- Budget
- $30–80
Try it on
See yourself as Phineas and Isabella
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What you need for a Phineas and Isabella costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Phineas and Isabella costume — one box instead of 6 pieces.
Phineas's Striped Shirt
An orange and white horizontally striped short-sleeve crewneck t-shirt.
DIY: Use fabric paint or orange tape to create horizontal stripes on a plain white t-shirt.
Phineas's Shorts
Bright blue or dark blue cargo shorts that sit at the knee.
Isabella's Pink Dress
A sleeveless pink pinafore-style dress or a pink A-line dress worn over a white shirt.
DIY: Wear a pink tank dress over a plain white short-sleeve t-shirt.
Isabella's White Undershirt
A plain, short-sleeve white crewneck t-shirt to wear underneath the pink dress.
Isabella's Bow and Belt
A large, oversized pink bow headband and a matching purple waist belt or sash.
DIY: Construct a large bow out of pink felt or cardstock and attach it to a plain headband.
Footwear
Phineas wears simple blue sneakers, while Isabella wears white high-top sneakers with pink socks.
Rather not assemble it? See ready-made Phineas and Isabella costumes at Spirit Halloween ↗
How to put it together
- 1
For Phineas: Put on the orange and white striped t-shirt and blue cargo shorts.
- 2
For Phineas: Put on blue canvas sneakers with low-cut white socks.
- 3
For Isabella: Put on the white short-sleeve t-shirt, then layer the pink sleeveless dress over it.
- 4
For Isabella: Fasten a purple belt or sash around the waist of the pink dress.
- 5
For Isabella: Put on white high-top sneakers paired with ankle-high pink socks.
- 6
For Isabella: Place the oversized pink bow headband securely on your head.
Makeup & hair
Phineas has messy, bright orange hair; use temporary orange hair color spray or an orange wig styled into messy spikes. Isabella has long, straight black hair with a blunt fringe; style your hair down with the signature pink bow headband on top.
Phineas and Isabella for couples, groups, kids & more
- couples
- One person dresses as Phineas in his striped shirt, and the other dresses as Isabella in her pink dress and bow.
- group
- Add Ferb Fletcher in a yellow collared shirt and high-waisted purple pants, and Candace in a red tank top and white skirt.
- kids
- Scale down the striped tee and pink pinafore dress for an adorable sibling costume.
- Plus size
- Look for comfortable, stretch-knit cotton fabrics for both the striped tee and the pink layering dress.
- pet
- Dress a pet dog as Perry the Platypus with a simple teal shirt and a small brown fedora.
Tips
- For Phineas's hair, use a strong-hold hair gel before applying orange color spray to get that cartoonish spike.
- Carry a clipboard or a toy blueprint as a prop to reference Phineas's endless summer inventions.
- Isabella can carry a Fireside Girls sash with DIY felt badges to add extra authentic detail to her outfit.
Phineas and Isabella costume FAQ
- What color is Isabella's dress?
- Isabella wears a bright pink sleeveless pinafore dress over a white short-sleeve t-shirt, accented with a purple belt.
- How do you style Phineas's hair?
- You can use an orange wig styled into messy spikes, or style your natural hair with heavy-hold gel and orange temporary hair spray.
- What are easy props for a Phineas and Isabella costume?
- A toy platypus (Perry), a clipboard with 'blueprints,' or a Fireside Girls handbook make excellent, lightweight props.
Did you know? Isabella's catchphrase, 'Whatcha doin'?', was inspired by co-creator Jeff 'Swampy' Marsh's own family members who used the phrase in a similarly sweet, inquisitive tone.