1. Straightening your fringe and curling the rest of your hair.
2. Pulling your hair into a zig-zag parting.
If you did this, you were guaranteed to be the envy of all your school friends.
3. Tying your hair into bunches and then tying bobbles all the way down them.
4. Tying your hair up in a ponytail but leaving out two wispy strands of hair to frame your face.
This was your go-to school look.
5. Low bunches that half covered your ears.
6. A flicked-out bob with lots of layers.
Kelly Rowland's hair in the video for "Stole" was everything you aspired towards.
7. Very high bunches with wispy bits of hair hanging around the side of your face.
8. All the butterfly clips you owned strategically positioned around the crown of your head.
With lots of strands of hair pulled back into swirly bits.
9. The pob.
For some reason, short hair at the back and long hair at the front was very much a thing in the '00s.
10. Two messy buns on either side of your head.
11. Chunky highlights in as many colours as your mum would let you get away with.
You were into literally everything about Kelly Clarkson's '00s look.
12. Home-dyed jet-black hair that was backcombed to within an inch of its life.
13. A side ponytail, often paired with massive hoop earrings.
This look worked with both a high pony and a low pony.
14. Very straight hair with lots of beady braids from your Babyliss Twist Braid.
These were really hard to brush out.
15. Very obvious hair extensions.
Nicole Richie, Chantelle from Big Brother, and Paris Hilton owned this look.
16. Scrunchies made out of fake hair that was kind of the same colour as your hair but not quite.
17. Poker straight hair.
GHDs changed your life.
18. A messy bun with chopsticks poked through it.
19. Scraping your fringe back with a zig-zag hairband.
20. Twisting all of your hair into tiny little bun things.
The more of your actual scalp you could see, the better.
21. Bleaching your hair until it went kind of yellow and brushing in a huge side fringe.
22. Long layers that kind of framed your chin.
The choppier, the better.