I don’t know who this girl is or how she does this, but it’s an incredible demonstration.
I’ve always been fascinated by accents from other countries and people who could simulate those accents (and simulate the languages too; Sid Caesar was great at this). And I’ve always wondered how people in other countries tried to sound when they simulated English. What do we sound like to them? Well, here you go. Be sure to keep watching until she gets to both UK and USA English.