Question: do you have long hair and if so, are you wearing it in a top knot?
If the answer is a no, we reckon you'll be tempted soon because from catwalk to the carpet, top knots are everywhere. Also, if Harry Styles can wear one, anyone can.
The best thing about this style simple style is it's easy to do (just invest in some good hair ties and hairspray), it's practical (no hair in eyes, hurrah!) and it's the kind of updo that looks cool and cute on any occasion.
There are a few types to choose from too. Here are five of our favourites:
1. The messy knot - when a celebrity wants to tone down the rest of their flawless red carpet style, what hairstyle does she choose? This one. Meant to look effortless, actually looks a bit unstable. (Sorry Cheryl.) Good for parties, not so good for first dates (you'll be too worried about it falling over.)
2. The trendy knot - as seen at Simone Rocha's Spring/Summer 2014 show, the top knot trend continues into next season. Keep the knot small, neat and wear with minimal makeup for maximum cool girl effect.
3. The office knot - MyDaily editor Sara has recently discovered the beauty of wearing a top knot to work. "It's stylish and it can be done in minutes," she says. Sara's top tip? "I would recommend using oil in clean hair to keep it in place, with a bit of hairspray to finish."
4. The bridal knot - the style was everywhere at the Autumn/Winter 2014 bridal fashion weeks. The look? Super scraped back and worn with a colour popping lip. The result? Slightly severe, but makes for one very style savvy bride.
5. The Proudlock - made famous by Made in Chelsea's Oliver Proudlock and recently seen on Harry Styles, boys with ear-length hair are getting fed up of their long locks. How are they coping? By scraping as much hair as they can into teeny, tiny knots. Obviously, the style looks all the more amazing with earrings and a necklace.
For more top knot inspiration, see a few of our favourite fans of the style below:
Want to recreate the style at home? Here's a quick masterclass: