How do I change Siri’s accent?

Siri has come a long way since the iPhone 4s. She can now be a He, and with iOS 11 and later she is even a bigger part of your iPhone. Siri is more than just your personal voice assitant, she can also be your personal DJ, make smarter suggestions in other apps, and add suggested arrival times to your QuickType keyboard. You can also now give Siri an American, British or Australian accent. Here’s how: