What app/How to put a gray border/shape around my Instagram profile picture?

[Valencia]

I've been seeing on multiple Instagram accounts that their profile photos have these cool gray borders around them in the shape of a heart or star, and I want to know what app they used.

[SandyDine]

I've been wondering the same thing!! I'm jut answering to see other answers

[Megan]

umm. i was just wondering the same thing :3 answerers, cmonn. ive heard diptic works, but it costs monaayy so i dont wanna buy it until im sure it actually does the job. its the kind of thing where a friend heard from a friend so.. not helpful at all, i know, sorryyy. xo

[JoyJoy]

Lol thts easy you need........ papelook hope i helped