Telling identical twins apart??

Khadijah

I am 23 weeks pregnant with identical twin boys. I was wondering for those who have identical twins, what are some things you did to help keep them straight? I hear that most parents know but of course I am freaking out about mixing mine up. I was considering doing an anklet or pin or having them in different colors. I am not sure though. Any ideas would be greatly appreciated!

Pic of my boys for attention!