Designer, model, muse, podcaster, stylist and presenter, Martha, lady Sitwell. Martha designs bespoke country sports wear under the brand name of Sitwell & Whippet. While finding time in her busy schedule to serve as muse to milliner Philip Treacy. Martha says she likes to walk the Heath with her dogs as often as she can, when she is in London. I loved Martha’s boho vibe pairing of bold autumnal check cotton jacket and Fedora. October 10 2021.