Pass for
Definition 1 of 2
Pro Tip 1/3Age Ambiguity
Used when someone looks much younger or older than they really are. 
At 30, she could pass for 20 in the right lighting.
Pro Tip 2/3Not Literal
It's about appearance or impression, not necessarily reality. 
With his accent, he could pass for an American.
Pro Tip 3/3Cultural Perception
Depends on how people perceive certain traits or stereotypes. 
She dressed in a saree and could easily pass for an Indian at the festival.