Instagram for the Kindle Fire/Kindle Fire HD
Quick Tutorial: How to Install Instagram onto your Kindle Fire in less than 5 minutes!
1. Download and install an app on the Amazon market called File Expert.
2. Go to setting on your Kindle Fire.
3. Choose “Device” option.
4. Choose “On” option for “Allow Installation of Applications” from unknown sources.
5. Now download the "instagram" app file onto your computer: http://www.mediafire.com/download/yzy4j2q91bbtnuu/Instagram_5.1.7.apk
6. Plug in your Fire, and copy the "instagram" file into your Fire.
7. Go to File Expert and locate the installation (.apk) file and hit install!
And again, if you have any questions or problems feel free to ask me!
Download link for the Instagram .apk file (most recent version, updated May 2014): Instagram 5.0.2 APK file download