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Sesame Street

Cookie Monster

Cookie Monster began life in a series of unaired commercials Jim Henson made in the 1960s for a snack company, where the same puppet ate a machine. He arrived on Sesame Street in 1969 and became the programme's most reliable source of adult-legible comedy — the joke being that he is the only resident with no impulse control whatsoever, in a show otherwise dedicated to teaching self-regulation.

Shop Cookie Monster shirts Kids & adult sizes

Sesame StreetDebut 1969televisionanimationbooks

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First appearance
Sesame Street (1969), Children's Television Workshop
Created by
Jim Henson, Frank Oz
Also known as
Sid
Universe
Sesame Street
Appears in
television, animation, books

Who is Cookie Monster?

Cookie Monster began life in a series of unaired commercials Jim Henson made in the 1960s for a snack company, where the same puppet ate a machine. He arrived on Sesame Street in 1969 and became the programme's most reliable source of adult-legible comedy — the joke being that he is the only resident with no impulse control whatsoever, in a show otherwise dedicated to teaching self-regulation. His broken grammar is deliberate and has occasionally drawn objections from educators. The programme addressed the nutritional criticism in 2005 by adding the line about cookies being a sometimes food, which was widely and wrongly reported as Cookie Monster being retired or renamed. He is a genuine crossover character: the design and the catchphrase sell heavily on adult apparel, entirely separately from the preschool market.

Cookie Monster: the details

First appearance
Sesame Street, November 1969, in the programme's first season
Created by
Jim Henson, performed for decades by Frank Oz
Predates the programme
The puppet appeared in unaired 1960s snack commercials Henson made, where it ate a machine
Had a name
Referred to as Sid in some early material before the Cookie Monster identity settled
The grammar is deliberate
His broken syntax is a written choice and has occasionally drawn objections from educators
A sometimes food
Added in 2005 in response to nutritional criticism, and widely misreported as the character being retired
Crossover appeal
Sells substantially on adult apparel independently of the preschool market

Why Cookie Monster endures

One of the original Sesame Street Muppets and the programme's most durable crossover into adult culture, where the design and catchphrase circulate largely detached from the show.

What Cookie Monster looks like on a shirt

Signature motif: A shaggy blue monster with googly eyes and a cookie

Bright blue with wide off-centre googly eyes — instantly recognisable and unusually funny in silhouette, which is why it works on adult apparel as well as toddler sizing. The cookie is a strong standalone secondary graphic.

Bright blue with wide, misaligned googly eyes — funny in silhouette, which is rare and is why this design sells to adults as well as toddlers. The cookie works as a standalone secondary mark. Strong on blue, black and heather grey.

Cookie Monster T-shirts

See all on Amazon →
Sesame Street Cookie Monster Bootleg Style T-Shirt, Men, Black, 3X-Large
Sesame Street
Sesame Street Cookie Monster Bootleg Style T-Shirt, Men, Black, 3X-Large
$19.99on amazon.com · Sep 29, 2026
Check sizes and price on Amazon

Buying from outside the United States? Prices shown are amazon.com in US dollars. Links redirect international readers to their local Amazon, where pricing, sizing and availability are shown in local terms.

Price and availability are taken from Amazon at the time shown and can change. The price on Amazon at the time of purchase applies.

Sizes: kids to adult

These links run a live Amazon search for Cookie Monster shirts in each US size band. Amazon shows what is currently listed; availability in a particular size is confirmed on the product page, not here.

BandAgesUS sizesSearch
Toddler 2–4 years 2T, 3T, 4T Search toddler sizes
Kids 4–7 years XS (4/5), S (6/7) Search kids sizes
Youth 8–14 years M (8), L (10/12), XL (14/16) Search youth sizes
Adult 15+ S–3XL Search adult sizes

US sizing shown. Cut and measurement vary between brands — see the size guide before ordering, especially for youth sizes. Base search: Cookie Monster t-shirt.

Who has played Cookie Monster

PerformerProductionYearType
Frank OzSesame Street1969Voice
David RudmanSesame Street2001Voice

More from Sesame Street

All Sesame Street →
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Sesame Street
Grover
Sesame Street
Oscar the Grouch
Sesame Street

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Cookie Monster T-shirts: common questions

Who created Cookie Monster?

Cookie Monster was created by Jim Henson and Frank Oz, first appearing in Sesame Street in 1969 (Children's Television Workshop).

What does a Cookie Monster T-shirt usually look like?

A shaggy blue monster with googly eyes and a cookie. Bright blue with wide, misaligned googly eyes — funny in silhouette, which is rare and is why this design sells to adults as well as toddlers. The cookie works as a standalone secondary mark. Strong on blue, black and heather grey.

Are Cookie Monster T-shirts made for children?

Yes — Cookie Monster appears on our kids pages, and shirts are commonly made from US toddler 2T up through youth XL.

Who has played Cookie Monster?

Cookie Monster has been voiced by Frank Oz (Sesame Street, 1969), David Rudman (Sesame Street, 2001).

How much does a Cookie Monster T-shirt cost?

Cookie Monster shirts we currently track start from around $16.99 on amazon.com. Every price on this page is dated, because they move.

This profile was compiled from published reference material about Cookie Monster — first appearance, creator credits and production history — and is a secondary source rather than a substitute for the original publication. Where a detail could not be corroborated it has been left out. We do not physically test garments; see how we work for what that means and what it does not.

Reference. This profile was compiled from published sources. For the character's full publication history see Wikipedia (Wikidata Q1754267). Our method and limitations are stated in full.

CharacterTshirts.com is an independent guide. It is not affiliated with, authorized by, endorsed by, or connected to any character rights holder, publisher, studio or network named on this site. All character names and titles are trademarks of their respective owners and are used here only to identify the products described.