AfterLight (formerly AfterGlow) "instant film" textures and frames are everything. I am doing my best to refrain from using them on every single thing I put on Instagram.
I think the app itself is free, it comes with different editing tools and free filters. To unlock the 5 new filters you have to "like" their Facebook page, and then to unlock the new Instant Film features it costs 99 cents... WELL WORTH IT, my friends. Seriously.
Anywho, just doing the common courtesy of letting you know the greatest thing ever invented for the iphone.
ps. Since Google Reader is going away (wtf, google) be sure to follow on BlogLovin! I use this app on my phone all. the. time. Except lately, it's been a real stupid head and won't open (seriously, it kicked me off the app seven times last night before it would let me open it)! Get that fixed, BlogLovin people!