Its not unusual to think you see someone who appears to look exactly like someone who has died. Especially if you had an emotional attachment to the deceased. After my husband died I saw a man who looked just like him. Freaked me out. Even today, 10 years later, I will see men who have the same features or body language. It’s a part of the grieving process.
Are you mourning someone?
On another note, my son has been called the twin of a famous actor. Years ago I flew into LaGuardia airport and thought all the female airport workers were Jennifer Lopez clones.