hi all - I've mostly been at the YSL and Chloe boards but have recently caught the Chanel bug! I bought a chanel bag from Portero (on eBay) but it does not come with an authenticity card. I would like to confirm the authenticity of the item at a Chanel boutique - do you know if the stores will do that? will they put something in writing so in the future if i want to sell the bag i'll have some proof? I'm kind of afraid going in and saying that I got something on eBay...will they think that's totally lame? thanks for your help!!