OOTD stands for “outfit of the day.” It’s a social media slang term and hashtag people use when they share what they’re wearing.

This guide covers the OOTD definition, where the term came from and how to use it in captions and texts. You’ll also learn the related slang that goes with it.

What Does OOTD Mean in Slang? (Definition & Origin)

OOTD meaning is simple on the surface. Underneath, the slang has grown well beyond its first use.

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What does OOTD mean in slang? It’s short for outfit of the day. People use it to show the look they’re wearing on a given day or occasion. It usually appears as a hashtag (#OOTD) on Instagram, TikTok, Pinterest, Tumblr and YouTube.

The outfit of the day trend took off around 2010, during the second wave of social media. It spread fast because it’s short, easy to type and easy to search.

The numbers show how big it got. The #OOTD hashtag passed 80 million Instagram posts by 2016. By 2022, it had passed 400 million.

The meaning has also stretched. At first, an OOTD was your own outfit, shot as a selfie or a friend’s snap. Now it can be any look that inspires you, even one worn by a celebrity or model. Fashion brands and magazines use it this way too.

There’s even a holiday. Stassi Schroeder helped make National OOTD Day official in 2018. People covered the story. It falls on June 30 and promotes self-confidence.

One small note: sources disagree on the exact start date. Some say the early 2000s. Others point to around 2010. No one can name the first person to use it.

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How to Use OOTD in Posts, Texts & Captions

Using OOTD takes about ten seconds. Snap a photo or short video, add a caption and tag it with #OOTD.

Here are a few easy ways to use the slang:

• In a text: “Sending you my OOTD for the interview. Too much?”
• In a caption: “Thrifted jacket, old jeans. Today’s OOTD.”
• In a comment: “This OOTD is perfect. Where’s the jacket from?”

A few tips help your outfit post look sharp:

• Use natural light, like a window or open shade.
• Show the full outfit, head to toe.
• Try a mirror shot, a street style pose or a simple flat lay.
• Tag the brands you wear, and say so if a link is an affiliate link.
• Add a few related hashtags, like #StyleInspo or #OutfitIdeas.

You don’t need new clothes to post an OOTD. Rewearing a favorite outfit counts, and it keeps your wardrobe fresh and low-cost.

How to Write an OOTD Caption

A good OOTD caption is short and fits your mood. Most work in one of three styles.

Short and punchy. Keep it to a few words, like “Casual Friday energy.”

Story-style. Share a quick thought, like “Rainy day, cozy sweater, extra coffee.”

Details-style. List the pieces and where you found them, like “Jacket: thrifted. Boots: local shop.”

Keep it simple. Avoid long paragraphs, and match the tone to the photo.

OOTD Slang & Gen Z Style: GRWM, Fit Check & More

OOTD has relatives. Some of this slang is shorter, and some fits video better.

Here’s how the main terms compare:

• OOTD: your outfit for one day.
• OOTW: your outfits for a whole week.
• WIWT: “what I wore today,” an older cousin of OOTD.
• GRWM: “get ready with me,” a video that shows your morning routine and outfit.
• Fit check: a quick show of your fit, or outfit. Many fashion fans now use “fit” instead of OOTD.

Gen Z style doesn’t have one official name. It blends many looks. Popular ones include Y2K, thrifted and vintage, streetwear, gorpcore and coquette.

People love OOTD for good reasons. It gives style inspiration, builds community and lets people show who they are.

There’s also a debate. A 2018 Guardian article reported a UK survey. About 10% of people said they had bought clothes just to post an OOTD, then returned them. Some stylists also say OOTD content can push people to follow trends instead of finding their own style.

FAQs

What does OOTD mean in slang?

OOTD means “outfit of the day.” People use it online to share what they’re wearing. It’s most common as a hashtag on Instagram and TikTok. It can also describe any outfit that inspires you.

What is the 3-3-3 rule for clothes?

It’s a capsule wardrobe formula. You pick 3 tops, 3 bottoms and 3 pairs of shoes. That makes up to 27 unique outfits. Some versions swap shoes for layers like jackets, so the rule isn’t always the same. A separate outfit version limits a look to three colors, three textures and three points of interest.

What is Gen Z clothing style called?

It has no single name. Gen Z fashion mixes trends like Y2K, thrifted and vintage looks, streetwear, gorpcore and coquette. Many people blend several at once.

What does OTTD mean in Instagram?

OTTD has no standard slang meaning. It’s most likely a typo for OOTD, which means outfit of the day. If you see it in a caption, it probably refers to the person’s outfit.

Conclusion

OOTD meaning comes down to three words: outfit of the day. It started as a simple hashtag and became everyday fashion slang.

You can use it for any outfit that inspires you. Snap it, caption it and share your next OOTD.