@turtle52 I bought an XS top at Nordstrom a few days ago, yet in spite of all the small and smaller models I've seen on QVC, absolutely none of them appear anyway close to my body type.
Right now in the part of my closet containing tops I actually plan to wear for the next few months, the sizes range from that XS to small or medium. I still buy the majority of my clothes locally, but I do believe many of the hosts are smaller than the camera shows us. I do check the size chart if I am doubtful - I hate even free and easy returns.
BTW - none of the bottoms in my closet are XS. I do not buy suits or sets. To achieve that effect, I buy separates in my appropriate sizes.