Instagram now allows users to add hashtag and profile links to their bios
With the new feature, Instagram subscribers can link to any hashtag or profile that they want to. Keep in mind however, that those Instagram account holders whose profile you mention in your bio will receive a notification that you are linking to them. They can decide to opt out, which will keep their "@" profile name in your bio, but it will no longer link to their Instagram account.
The ability to add hashtag and profile links to your Instagram bio is part of a new update for the app that is currently rolling out for both iOS and Android users. If you'd like to install Instagram on your phone, click on the appropriate link. (iOS|Android)