There is no way to put reviews up on each individual store, so it's impossible to know if the store is real or not. I ordered a sweater from a fake store and it never came in, and the store shut down quickly afterward. The same thing happened to my friend.
Yes, there are good, legit stores on the site, but it's always a gamble. Storenvy also tends to have higher prices than other sites offering the same product, and there are rarely any sales. I do not recommend to anyone.
Bottom Line: No, I would not recommend this to a friend