How do you install the new pack from Origin?

You have to exit the game in order to download new content.

Go to "My Game Library" in Origin.

Click the Sims 4.

Go to "Expansion Packs" and find "Get Famous." It should say Download if you already bought it.

Open up your Origin, go to your library and select The Sims 4, then go to expansion packs and scroll down until you see Get Famous, press the download button.

Thank you! I totally missed that section. :)

I can't download it. When I click on the button, it says "We're sorry, Origin was unable to download your game. Please check your internet connection, or try again later." There's nothing wrong with my internet connection. And yes, I bought the Celebrity Exp. a few weeks ago and Origin acknowledges that I already own it. So what could be the problem?

Nevermind. I didn't realize there was an issue with the payment process. Thanks again for helping.