Slightly modified version of Twitter Instagram Cards by ChrisBradBury, i fixed few bugs with the @grant option, and i've added open/close button for images & its now works when you load older tweets or new tweets comes in. original script URL : https://userscripts.org/scripts/show/153881

instaTweet.js

// ==UserScript==
// @name         Twitter Instagram Cards - Photo Viewer
// @namespace    http://chrisbradbury.net
// @author       Chris Bradbuyr
// @author       AbdulMohsen B. A. A.
// @version      1.2
// @description  Now that Instagram have pulled their twitter support, this script adds back inline instagram photos.
// @include      https://twitter.com/*
// @require      https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.js
// @grant        setTimeout
// ==/UserScript==

$documentHeight = '';
debug = false;

function height() {
    if (debug) {
        console.log('Checking Tweets at Height ' + $(document).height() );
    }
    
    if ( $documentHeight != $(document).height() ) {
        loadInstagram();
    }
    
    if (typeof timeout != 'undefined')
        window.clearTimeout(timeout);
        
    var timeout = window.setTimeout(height, 3000);
}

function loadInstagram(){

    $documentHeight = $(document).height();
    
    $('body').find('.js-tweet-text').each(function(key, value){
        if ( value.innerHTML.indexOf("instagr.am") >= 0 ) {
            if( value.innerHTML.indexOf('div class="instagram"') >= 0 ){ }else{
                $instagram = value.innerHTML.split('http://instagr.am/p/');
                $instagram = $instagram[1].split('/"');
                $instagram = $instagram[0];
                $(this).append('<br clear="both"><a onClick=\'$("#' + $instagram +'").toggle();\' href="javaScript:void(0);">Open/Close</a><br/><div class="instagram" id="'+ $instagram +'" style="margin-top: 10px; margin-bottom: 5px;"><img width="435" src="http://instagr.am/p/'+$instagram+'/media" /></div>');
                if (debug) {
                    console.log('loading Instagram Image ID:' + $instagram);
                }
            }
        }else if( value.innerHTML.indexOf("instagram.com/p/") >= 0 ){
            if( value.innerHTML.indexOf('div class="instagram"') >= 0 ){ }else{
                $instagram = value.innerHTML.split('instagram.com/p/');
                $instagram = $instagram[1].split('/"');
                $instagram = $instagram[0];
                $(this).append('<br clear="both"><a onClick=\'$("#' + $instagram +'").toggle();\' href="javaScript:void(0);">Open/Close</a><br/><div class="instagram" id="'+ $instagram +'" style="margin-top: 10px; margin-bottom: 5px;"><img width="435" src="http://instagr.am/p/'+$instagram+'/media" /></div>');
                if (debug) {
                    console.log('loading Instagram Image ID:' + $instagram);
                }
            }
        }
    });
}

$(document).ready(function(){
    loadInstagram();
    height();
});