Infant knee high or thigh socks?

Irene • Due date Aug ‘18 but she came July ‘18 🙌🏾🙌🏾🙌🏾 Late Term Preemie 💕🌈💕

I was wondering where I can buy infant knee highs or thigh highs? They don’t seem to sell them in stores but I always see people post their babies wearing them on social media.