I'm a big peeved right now at Old Navy for selling plus size clothing "exclusively online" - i.e., NO LONGER SELLING PLUS CLOTHING IN STORES, a big no no in my book.
However, Oldnavy.com is still a great place to stock up on basics. Most of Olf Navy's clothing is cheap and poorly made, but occasionally you come across a great, cheap find that is worth the money even if it only lasts a few months.
I found some great lounge shorts in cute styles on the old navy website. For only $14.50 a pop, they're a steal!