When creating an OC the personality and backstory are the most important aspects. But how will s/he be recognized if her/his hair, face and whole body looks just like an other one's OC?
The answer is simply: her/his clothing! Most people choose their clothing on their own. And not everybody buys the same shirt or shoes.
The choice of clothing is the best way to get recognized because a lot of matters are involved when you choose your new shirt. You consider age, attitude, gender, environment, hobbies, personality and profession (even when you're unemployed).
But let me show you step by step:
This aspect is quite simple:
A baby or toddler will just wear clothes like romper suits and so on. But remember that the one responable for their clothing may also consider the kid's so far shown personality and all the other things I'm going to talk about later.
When the kid gets older, it's a bit different. Parents or people in charge will still be the one buyin