A Brief History of the Onesie

In 2001, JumpinJammerz introduced onesies on MadTV and CSI: Las Vegas. However, onesies have a much longer and fascinating history as adult jumpsuits or pajamas.

The origins of the onesie.

Pyjamas were first introduced in Britain during the 17th century and again in the late 1800s. By the 1880s, retailers started selling one-piece tops and bottoms, which were the early versions of the onesie. Sleepwear became popular in the 1930s, and men started wearing silk one-piece pajamas as evening wear.

Winston Churchill wore them!

Winston Churchill’s endorsement of onesies as comfortable garments was a significant turning point in their history. It changed the public’s perception of onesies.

The “siren suit”

The “siren suit” was a one-piece garment that covered the entire body and was initially designed for use in air-raid shelters during World War II. It solved the problems of warmth and modesty during nighttime air raids in the UK. The suit was similar in style to boiler-suits worn by mechanics and bricklayers.

The union suit

The union suit was a long underwear garment that was a precursor to the modern onesie. It was popular in the 19th century as an alternative to constricting garments. The union suit was eventually replaced by two-piece long underwear in North America.

Despite Churchill’s endorsement, onesies did not immediately become popular with adults.

Onesies were baby-warmers.

Onesies were commonly used to keep babies warm in the 1950s. They became extremely popular with parents during the baby boom, especially in colder weather.

In the early 1970s, a book called “2010: Living in the Future” predicted the universal use of jumpsuit-style clothes, including onesies. Today, onesies are a popular garment worn by people of all ages.

The Present

Nowadays, people of all ages wear onesies because they are comfortable and warm to wear as lounge-wear. Even famous celebrities have been seen wearing onesies in public as a fashion statement or simply for their comfort. Well-known Hollywood actors like Brad Pitt have been spotted wearing onesies in various colors and patterns.

The trend of adult onesies was initially popularized by a company called JumpinJammerz, which started manufacturing lounge-wear for men and women in 1998. Initially meant to be a gimmick for Steve Pandi’s rock band, it eventually became a widely popular and fast-selling fashion item in the United States and the United Kingdom. JumpinJammerz’s onesies were even featured on television shows like MadTV and CSI: Las Vegas.

In 2007, the adult onesie became a popular gift among celebrities and many of them were seen wearing them at the Academy Awards and Emmy Awards. By 2008, a number of imitators of JumpinJammerz’s onesies started appearing on the market, trying to replicate the already popular fashion trend.

Onesies have also been referenced in pop culture, such as in Macklemore’s music video for his song “Thrift Shop”. Companies all over the world continue to make adult onesies with new patterns and designs for both celebrities and the general public, with many pop and hip hop artists wearing them on stage. The onesie remains popular among both adults and children, standing the test of time as a fashion trend.


1. What is a onesie?

A onesie is a one-piece garment that covers the entire body, typically worn as loungewear or sleepwear. It features a front opening with a zipper or a row of buttons, and often includes a hood and pockets. Onesies are usually made of soft, comfortable fabrics such as cotton, fleece, or polyester. They come in various colors, patterns, and designs, and are popular among both children and adults.

2. When did onesies become popular?

The onesie was first introduced in the 2000s as a casual fashion trend, particularly in the United Kingdom. It gained popularity among young adults as a comfortable and fun alternative to traditional sleepwear. In recent years, onesies have become increasingly mainstream, with retailers offering a wide range of styles and sizes for all ages. The popularity of onesies has also led to the creation of themed onesies, such as animal or superhero onesies.

3. Who wears onesies?

Onesies are worn by people of all ages and genders, although they are particularly popular among children and teenagers. They are often worn at home as loungewear or sleepwear, but can also be worn to events such as costume parties or music festivals. Some people even wear onesies as a statement fashion piece, pairing them with sneakers or accessories for a unique look.

4. Are onesies practical?

Yes, onesies can be practical for a variety of reasons. They are comfortable and warm, making them ideal for lounging or sleeping in. They are also convenient, as they eliminate the need for separate tops and bottoms. Additionally, onesies can be fun and playful, making them a popular choice for themed events or parties. However, some people may find onesies impractical for everyday wear, as the full-body design can make it difficult to use the restroom or move around freely.

5. Are there any controversies surrounding onesies?

While onesies are generally seen as a harmless and fun garment, there have been some controversies surrounding their design and marketing. In 2017, a school in the United Kingdom banned onesies from being worn as school uniform, citing concerns over hygiene and safety. Additionally, some people have criticized the sexualization of onesies in advertising, particularly those marketed towards women. However, these controversies have not significantly impacted the overall popularity of onesies.

6. What is the future of the onesie?

The future of the onesie is uncertain, as fashion trends are constantly evolving. However, it is likely that onesies will continue to be popular as a comfortable and playful garment, particularly among younger generations. As sustainability becomes a more important issue in fashion, there may be a move towards more eco-friendly materials and production methods for onesies. Additionally, as technology advances, there may be opportunities for onesies to incorporate new features such as heating elements or built-in speakers.

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