Unzip the downloaded file and place all those files into your Sims 4 Tray folder, which can be found at
Documents » Electronic Arts » The Sims 4 » Tray.

Don’t forget to download all the custom content listed. Otherwise, your sim won’t look like mine.

Place custom content files into the Mods folder located at
Documents » Electronic Arts » The Sims 4 » Mods.

Tutorial: How To Download My Sims From The Gallery 

Download Sim

Download Billie Eilish Yellow CAS Background: here

Billie Eilish merch I found(beanie, hat, hoodie etc.): here

Custom content used:
Billie Eilish, female sim download, Katverse, sims 4, Sims 4 CAS Background, sims 4 cc, sims 4 mods, The Sims 4, The Sims 4 celebrity, The Sims 4 Custom content
Author Katverse
Published
Categories Celebrities Create A sim Speed Edits