Get instantsave from your app store then go to instagram and then hit the butten to take a picture then hit the butten to go to gallery to pick the picture that you saved and then post it ;)
No, it is not possible to repost a private Instagram post.
You can screenshot a picture. That you will find in your image gallery, you can then crop and post as normal. Or You can download a app which lets you repost the pictures you want to. One problem with this is that it will say instarepost at the bottom of the pictures you repost The app's name is insta repost.
Yes, it is a good idea to use repost for instagram app
No, it is not legal to repost private Instagram posts without permission from the original poster.
It's not possible
Take a screenshot of the picture you want to repost by pressing the power button and home button at the same time, then post the screenshot. Or downolad InstaRepost App from iTunes - it's free and allows you to repost pics in 2 taps.
A link can be found in the related links section.
On an iphone you go to the picture you want to repost and then hold down the home button and lock button and it will take a screen shot. Then you would go to the camera icon on the botton and find the screen shot and post it
The only way you can currently is to download the Instarepost app from the Google Play store. That app will give you the ability to repost the photo from the Instagram feed, Not only can you do this with the app, but it will also allow you write a status and share it on Facebook and Twitter, much like a regular Instagram post.
you ask someone on instagram
no
I think all you can do is save the picture and repost it