How do I find out if my PRADA Purse is real or a knock-off?

I have tried a few different sites, but cannot find ANYTHING that looks anywhere NEAR the same! My girlfriend had a tag for it that said PRADA right on it, but you never know these days if THAT is the truth or not. How do I tell? Or, who can tell me where to go to be able to find out? Thanks for everyone's help in advance!|||take it outside and set fire to it, if it burns with a greeny coloured flame its the real thing.|||by the handle, always works. if its like ropeish its fake. leather means its most likely real. see how strong the metal on it is connecting the chandle to the bag. its fake if it feels cheap and weak. if its strong and has good hanles its probably real. if its that hard to tell, ur lucky! if u see all those fake coaches theyre nothing like coach really is.|||First, you can look at the stitching, fabric, see if it looks cheap, or hand stitched and high quality. Does it say it's made in Italy? Or China? If you can't find it, try going to Prada's website. If it's not there it's probably a fake. Maybe you should post a few pictures.|||basically, if you paid anything less than $800 for it, its fake. even if you bought it on ebay, people arent dumb. they wouldnt sell you a real prada purse for 60 bucks.|||ohhh you can tellll