Costumes

Bring the Party to Life!

Bat girl Super girl and Wonderwoman ladies in costumes
WE'VE GOT LOADS OF

Adult & Kids Costumes

So many that we couldn’t possibly show all of them to you right here! Come on in to your nearest Diddams to see our entire selection. Or you can give us a call, and we’ll check to see if we have your size in stock!

ALL YEAR ROUND!

Don’t wait for Halloween to have a great time dressing up as your favorite character! We are the largest, year-round costume shop in the Peninsula, available all day everyday for your convenience.

GREAT SELECTIONS

If you want it, Diddams has it. Superheroes, famous people, animals and fairies, you name it we’ve got it. Our costume experts can even provide great ideas for your costumes. Walk through the isles for inspirations and let us help you bring them to life.

PERFECT THE LOOK WITH ACCESSORIES & MAKEUP

Adding the finish touch to your look with wigs, masks, makeup, and props like fake blood, fake teeth, and fake jewelry– you never run out of options with us.

VIEW SPECIAL OFFERS

What's New in the Store

little boy in captain america costume

Make Lasting Moments with Family & Friends

We bring you unique items you won't find anywhere else.

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Supplies

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Balloons

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Costumes

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Candy

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Toys

Everything You Need to Create the Costume of Your Dreams

Costume Accessories

Our costume accessories help you put the cherry on top of a great costume!  No Jedi getup is completed without a Lightsaber. What is a witch without her pointy hat and her favorite broom? Or a little pirate without his little eye patch and his pirate hat and hook? At Diddams you can find thousands of costume accessories to adorn your costumes with. Picking out what to wear is only the beginning. Come into your nearby Diddams to checkout what accessories are availale. We can help you turn your outfit from good to amazing!

OUR CLIENTS SAY IT BEST

Experience the Diddams Difference

“I live on the east coast but last night my adult son was rushed to a hospital in his home town on the west coast. The business owner Mrs. Diddams personally delivered my child's get well bouquet. Thank youuuu so much for going above and beyond!“

TERESA GREENE

“ This store beats party City hands down for selection and fun! Toy collection is extensive and eclectic. We had a ton of fun wandering all the aisles! A hit!!!“

DAWN MARIE WOYAK

“This place is overwhelming, in a good way. There are so many things to choose from: plates & cutlery in every imaginable color, party accessories & decorations for every occasion & a ballon station where they can do anything you want. “

LILIAN TELLEZ

“Diddams is my go to for party planning and when I am trying to make an experience special! Pretty extensive shop with a lot to explore and buy!“

VERONICA LIN

Wigs and Makeup

Keep Your Costume Unique

Our wigs & Makeup can help you take your costume from basic to unique! No vampire should be walking around without at least a little bit of fake blood and a white complexion. What about dressing up for the 60s without the long beautiful locks? Or can you imagine walking around being a zombie without the perfect makeup? Wearing the perfect costume is only the first step, if you really want to impress, you need the right makeup and wig. Diddams carries hundreds of selections of wigs and makeup for any occassions.

At Diddams, our staff will assistant you in making your costume from good to perfect. Come in today to your nearby Diddams and see all our great selections in our wigs & makeup department.

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Find a Diddams Party & Toy Store Location Near You

Mountain View
1952 W El Camino Real
Mountain View, CA 94040

(t) 650.965.0138

Sun - Wed: 10AM - 5PM

Thurs - Sat: 10AM - 7PM

San Carlos
700 Laurel St
San Carlos, CA 94070

(t) 650.802.0600

Sun - Wed: 10AM - 5PM

Thurs - Sat: 10AM - 7PM

San Mateo
1940 S El Camino Real
San Mateo , CA 94403

(t) 650.235.8448

Sun - Wed: 10AM - 5PM

Thurs - Sat: 10AM - 7PM

Daly City
468 Westlake Shopping Center
Daly City, CA 94015

(t) 650.756.5050

Sun - Wed: 10AM - 5PM

Thurs - Sat: 10AM - 6:30PM

WE WANT TO HELP YOU

Throw Your Best Party

WE DO PARTY PLANNING

You dream the idea. We go to work.

New! We have event planners right here at Diddams. Bring us your dream ideas and your budget, and we can make it happen for you. We bring your party to life!

Enter your email below, and one of our party planners will reach out to discuss your event.

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