"90 Day Fiancé" is a popular reality TV show that airs on the TLC network.

It follows couples who are navigating the K-1 visa process and preparing to marry within 90 days of the foreign partner's arrival in the United States.

It is also available to stream online through TLC's website, as well as through streaming services such as Hulu, Amazon Prime Video, and Sling TV.

In addition, past seasons of the show may be available to purchase or rent on platforms such as Google Play, iTunes, and Vudu.

Keep in mind that availability may vary depending on your location and the specific platform. 

You may need a subscription or account with one of these streaming services in order to access "90 Day Fiancé."

Fans of the show can tune in to watch new episodes on TLC, or they can stream past seasons online through the TLC website.

In addition, past seasons of the show may be available to purchase or rent on digital platforms such as Google Play, iTunes, and Vudu. This allows fans to catch up on previous seasons or rewatch their favorite episodes.

It is worth noting that availability may vary depending on your location and the specific platform. You may need a subscription or account with one of these streaming services in order to access "90 Day Fiancé."