Good news for all non-instagram users! Instagram offers now websites for each user (who is not private) where you can see their profile and the last 9 pictures. So I thought this would be something people are interested in ...
Here are the TGA profiles
http://instagram.com/thegaslightanthem
http://instagram.com/xandermilia
http://instagram.com/alexdlevine
http://instagram.com/bennyhorowitz
http://instagram.com/perkins28
http://instagram.com/bradclifford
I believe Brian has one too it's private. Not sure about that though
And please refrain from checking their girlfriends & friends pages