I am a 16 on the bottom. I got the XL and it just fits, but I prefer more room in pyjamas so feel it runs small. Cute but easily creases, seam inside not very soft.
These shorts are adorable. They look good with any nightwear top. I found they were true to size, and really flattering.
Lovely quality, soft and flattering and great with Bravissimo's super supportive nightwear tops. The medium size would fit a 12-14. Very happy with my purchase.