How to create a CIRCULAR mini map in UMG?

How do I crop a UMG image to make it circular.

I’m creating a mini map for my game and need the map to be circular.

How do I accomplish this?

Thanks!

You may refer to this youtube tutorial Creating A UI Minimap - #10 Unreal Engine 4 Blueprint Creations Tutorial - YouTube
As for mini map instead of square box in the video, use your own circular looking shape.

I already know how to create a mini map. I just need to know how to make it circular.

“use your own circular looking shape”

How do I do that? How do I make the UMG image a circle instead of a square?