Then you may find the information at this link helpful: https://instagram.com/about/le...
Interesting excerpts:
"By accessing or using the Instagram website, the Instagram service, or any applications (including mobile applications) made available by Instagram (together, the "Service"), however accessed, you agree to be bound by these terms of use ("Terms of Use"). The Service is owned or controlled by Instagram, LLC ("Instagram"). These Terms of Use affect your legal rights and obligations. If you do not agree to be bound by all of these Terms of Use, do not access or use the Service. ...
Rights
1. Instagram does not claim ownership of any Content that you post on or through the Service. Instead, you hereby grant to Instagram a non-exclusive, fully paid and royalty-free, transferable, sub-licensable, worldwide license to use the Content that you post on or through the Service, subject to the Service's Privacy Policy, available here http://instagram.com/legal/pri..., including but not limited to sections 3 ("Sharing of Your Information"), 4 ("How We Store Your Information"), and 5 ("Your Choices About Your Information"). You can choose who can view your Content and activities, including your photos, as described in the Privacy Policy. ...
5. The Service contains content owned or licensed by Instagram ("Instagram Content"). Instagram Content is protected by copyright, trademark, patent, trade secret and other laws, and, as between you and Instagram, Instagram owns and retains all rights in the Instagram Content and the Service. You will not remove, alter or conceal any copyright, trademark, service mark or other proprietary rights notices incorporated in or accompanying the Instagram Content and you will not reproduce, modify, adapt, prepare derivative works based on, perform, display, publish, distribute, transmit, broadcast, sell, license or otherwise exploit the Instagram Content."