Katy Perry Halloween Costume Ideas

1 "California Gurls" Music Video Katy

The music video for "California Gurls" is a straight-up confectionery dream. From cotton candy clouds to trees made out of lollipops, this video is as sweet as it gets, and Katy's outfits are no exception.

What to wear: A white minidress with candies all over it and a lavender wig.

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2 Hillary Clinton Fan Katy

Image Source: Getty / Paul Morigi

Katy was very outspoken about her support of presidential candidate Hillary Clinton during the 2016 election, so it's easy to recreate any of her redm white, and blue looks. She wore a variety of Hillary gear throughout election season, but this sweatsuit from the Democratic National Convention is super easy to imitate.

What to wear: A navy blue Adidas tracksuit with slides. Black sunglasses and a hat with HRC on it will complete the look.

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3 Met Gala Katy

Image Source: Getty / Venturelli

Katy has had more than one memorable Met Gala look, but her 2017 outfit for Rei Kawakubo/Comme des Garcons: Art of the In-Between was truly something. As cochair of the event, she had to make a statement, and this Maison Margiela dress was just that.

What to wear: The most over-the-top red dress you can find, with a long red veil. Bend some pipe cleaners or wire to spell out "Witness" to wear as a headpiece.

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4 "Swish Swish" at the VMAs Katy

Image Source: Getty / Joshua Blanchard/MTV1617

Katy's "Swish Swish" may not really be about basketball (ahem, it's about Taylor Swift), but the theme of the video and her 2017 VMAs performance certainly takes to the court.

What to wear: A white T-shirt with a bedazzled basketball on it, white shorts, and white boots.

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5 "Last Friday Night" Music Video Katy

It's like the '80s exploded all over the "Last Friday Night" music video. It's so neon! Katy — or Kathy in the video — goes from the nerd to bombshell with Rebecca Black's help (yes, the Rebecca Black who sings "Friday") and has the most insane night ever.

What to wear: A denim romper with a pink turtleneck. You also need headgear and glasses. Make your hair as big as possible — it's the '80s, y'all!

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6 Walk of Fame Katy

Image Source: Getty / Axelle/Bauer-Griffin

Katy was on hand to present Minnie Mouse with her Hollywood Walk of Fame star in January 2018, and she made sure to wear an outfit that would make both Minnie and Mickey proud.

What to wear: A red-and-white polka-dot outfit with a big floppy hat to match.

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7 Grammys Red Carpet Katy

Image Source: Getty / Steve Granitz

Katy can do it all, from outrageous bright colors to high-class glamour. To walk the red carpet for the Grammys in 2014, she wore a stunning Valentino gown that no one will ever forget.

What to wear: A long, sheer gown with music notes all over the skirt and train.

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8 2011 VMAs Katy

Image Source: Getty / Jon Kopaloff

For a show like the VMAs, one outfit is never enough for Katy. In 2011, she wore one look down the red carpet, another during the show, another to perform, and this stunner at the end.

What to wear: A black and silver minidress with records on it. You'll need another record as a headpiece and a pink wig.

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9 Saturday Night Live Katy

Image Source: NBC

After Sesame Street refused to air her segment singing with Elmo in 2010, Katy made an appearance on SNL spoofing the whole situation. She really went for it, though, with her Elmo shirt.

What to wear: A very tight and low-cut shirt with Elmo's face on it, and a plaid schoolgirl skirt.

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10 MTV Movie Awards Red Carpet Katy

Image Source: Getty / Steve Granitz

Katy's colorful wigs were always so fun. It seemed like she had a different color for every event, like the blue one she rocked at the 2010 MTV Movie Awards.

What to wear: A flesh-colored minidress with strategically placed rhinestones and a blue wig.

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11 "This Is How We Do" Music Video Katy

There are so many good looks to choose from in this video. Katy sports a variety of outfits and hairdos while singing along to this jammy song from 2014.

What to wear: A pizza-print one-piece swimsuit and red, heart-shaped sunglasses. Carry around watermelon to snack on.

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12 Super Bowl Halftime Show Katy

Image Source: Getty / Kevin Mazur

Katy lit up the big stage in 2015 when she performed at the halftime show at the Super Bowl. She sang a medley of her hits and even brought out Lenny Kravitz and Missy Elliott.

What to wear: A minidress with flames all over it.

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13 Prismatic World Tour Katy

Image Source: Getty / Kevin Mazur

The best look from Katy's Prismatic World Tour in 2014 was the outfit most fitting to the name of the tour and the album behind it — Prism. As always with her shows, the entire thing was a spectacle.

What to wear: A miniskirt and crop top with rhinestones or mirrored pieces all over them. You'll also need a microphone.

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14 "Roar" Music Video Katy

For a song that's all about being a fighter and powering through when life gets hard, the video for "Roar" fits right along with the theme. Katy's in the middle of the jungle and goes from being scared to ruling the whole damn place.

What to wear: An animal-print bikini top, a skirt made out of leaves and flowers, and a flower crown.

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15 2013 Grammys Red Carpet Katy

Image Source: Getty / Dan MacMedan

Katy walked the carpet at the 2013 Grammy Awards in this incredible mint green Gucci gown that was simple yet flawless.

What to wear: A floor-length green gown with flowers and leaves around your neck.

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16 "Hot N Cold" Music Video Katy

As is standard for Katy's music videos, the one for "Hot N Cold" is like a minimovie of a groom who decides he doesn't want to get married because he's so hot and cold. Get it?

What to wear: Any wedding dress of your choosing.

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17 "California Gurls" at the MTV Movie Awards Katy

Image Source: Getty / Kevin Mazur

The outfit Katy wore to perform "California Gurls" at 2010's MTV Movie Awards will always be one of her best and most iconic.

What to wear: A pink rhinestone bikini top or crop top, bedazzled blue shorts, heels, and a blue wig.

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18 "Firework" Music Video Katy

Towering over Budapest, Hungary, Katy sings about overcoming your fears while fireworks actually burst from her soul (it's actually her chest, but you get the meaning). It's a beautiful video with a beautiful message, and won Katy the video of the year award at the 2011 MTV VMAs.

What to wear: A flowing white or silver beaded dress. Carry around sparklers.

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19 2014 VMAs Katy

Image Source: Getty / Jason LaVeris

For the 2014 VMAs, Katy paid homage to Britney Spears in an all-denim look, similar to what Britney wore for the 2001 American Music Awards.

What to wear: Nothing but denim. Bonus points if you have a partner to go with you, also wearing all denim.

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20 "I Kissed a Girl" Music Video Katy

Katy's iconic song and video for "I Kissed a Girl" is all about her experimental game, and includes a lot of sultry looks and girls dancing around while scantily clad. This was the song that put Katy on the map in 2008.

What to wear: A gold minidress, and carry a fan around.

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