I'm a stanford alumnus and bought a complete set of Stanford Complete Doctoral Regalia for Engineering PhD today. If anyone wants to rent it for graduation ceremony this June. You can rent it from me at $100. I bought from this website:
https://www.capgown.com/Merchant2/merchant.mvc?Session_ID=0c09a694fb35fd147bf55f3ed0da5b0f&

Gown size is XL and Cap Size is Large. It is a brand new set!