While I don't confess to being a Bebe expert, I can honestly say I have purchased a pair of fake Bebe jeans on Ebay.  Since that time I have noticed some of the "tell-tale" signs most of these fakes seem to have in common.  For one thing, they have a little round tag on a ribbon attached to them.  Personally I have never seen that tag in any Bebe store attached to a pair of jeans, have you?  Also, every pair of the real deals I have bought are extremely long with the inseam being 33 inches or more.  The fake pair I received measured about 31.   Also, they show a tag that says Bebe in a little plastic attachment--it doesnt look like the real Bebe tags present in the store with the name of the jeans and the price on them.    It seems they copy the jean styles most with rhinestones on the back pockets or written across the back.  Mine had extra rhinestones attached and believe me you needed more than they provided, since over half of them fell off in the wash the first time in spite of turning them wrong side out and cold washing, line drying.  The material they are made of is totally not like any of the real ones I have had.  It's a shame that the Bebe name is so ruined by the vast number of NWT jeans the counterfeiters are selling.  As one of the other guides say, if it appears to good to be true, it probably is. What did I expect-- a $138 pair of jeans for $24.99? 

I traveled to Hong Kong and realized that there are "experts" in reproductions, even down to the buttons, fabric with the name printed on it, rivets, etc.  However, on close examination, the quality is not present.  Chinatown in New York is a great example of how many knock offs are being sold every day.  While Ebay does its best to monitor fakes, there is a market for them. Unfortunately because ebay doesnt allow fakes, the seller is forced to represent the product as authentic.  Thus the ability to buy a fake knowing it isn't real is minimized because it is advertised as authentic.