I've posted a few XL Stark and Marked cardi pics in this thread. Scroll through the recent images.
FWIW I sold my XL Amalgam and Robust knits before posting fit pics, they both fit a lot slimmer than the Stark. Pics in my B&S feedback.
Marked cardigan is the biggest fitting SNS of all, fits a full size bigger than the Stark. I would actually prefer to size down, let me know if you are interested in a black XL.