Originally Posted by vintagelace
1.) material looks cheap
That is the main thing. So far, every authentic R&R I have seen has had a very high quality denim. So if they look cheap, I guarantee you they are cheap.
Also, the "R" on the back pockets of fake R&R looks very cheaply done. The "R" is R&R's signature, so you know that it is going to be done very well.
Other than that, I would say if you are unsure, post pics and someone on this forum should be able to help you.