The stunt double in the other pics is wearing something pyjama-esque, so it is the OTOH in your post...
And here's the actual outfit: http://www.telegraph.co.uk/culture/...age-of-Peter-Capaldis-Doctor-Who-costume.html
We needs to make a new thread for discussion, yo! It's no longer "12th Doctor Costume?"... It's "The 12th Doctor's Costume Revealed!". Mark