Open Instagram and go to the story you want to repost
If you are tagged in the story, tap Add to your story
Edit the story if needed
Tap Your story to repost it
If you are not tagged, take a screenshot or screen recording of the story
Open Instagram and create a new story
Upload the screenshot or screen recording
Edit and post it to Your story
If the account is public and allows sharing, tap the paper airplane icon on the post and choose Add post to your story
Make sure you have permission before reposting someone else’s content