Selling things on Twitter is getting easier: The social network started testing new product pages and product-related collections Friday, allowing traditional retailers as well as celebrities and Hollywood studios alike to sell merchandise to fans and followers.

HBO, for example, now features a collection of tweets about “Game of Thrones” merchandise on the show’s Twitter page. Each tweet in that collection links to an individual product page that shows off the product itself, features tweet about the product, and links to HBO’s online store.

Alternatively, product pages can also feature a buy button, which Twitter started to test last September.

These new product pages are now available on the web as well as through Twitter’s Android and iOS apps. Some of Twitter’s initial launch partners include the Disney store, Fox Home Entertainment, HBO, Michelle Phan, Reese Witherspoon, the “Ellen Show” and Warner Bros.

Twitter’s e-commerce product manager Amaryllis Fox said Friday that the company has bigger plans for product discovery and buying:

“This is just the beginning. In the coming months we’ll be testing more new experiences we hope give you the most personalized and relevant information about the places and things you want to explore.”

The announcement comes a week after Twitter CEO Dick Costolo announced that he is stepping down at the end of the month, and seem to be part of a bigger effort to put the focus back on Twitter’s products and revenue opportunities after a disappointing earnings report earlier this year.