Take a look at this one:
http://www.gap.com/browse/product.do...923&pid=441087. Its original price is $98, but is on sale right now for $29.99. I've previously purchased a carrier from the Gap which is the same size but a different style. It is definitely big enough for a six pounder. The one they have right now is black with sequins. I have the denim one which is already discontinued. I take my Yorkies with me everywhere and no one even knows they're in there. Plus with all the pockets I can carry all my other stuff, too.