Third party Instagram app for Windows Phone, Itsdagram, quickly pulled after launch
Winstagram will upload your Windows Phone 8 picture to Instagram
With Itsdagram on the sidelines for now, Windows Phone users can try recently launched Winstagram. This app simply uploads your pictures to Instagram and nothing else. You will need to use another app to view your pictures after they are uploaded, so keep in mind that this is not a one-app does all Instagram client, and will cost you $1.99 to download.
source: WindowsPhoneStore (1), (2) via WPCentral
Things that are NOT allowed: