Try not to get distracted by Grace Kelly, it's the PJs we're interested in... remember?
I've found a similar pair to these from Derek Rose (of Savile Row no less) here... a similar lovely shade of blue that looks flattering on almost everone. You can even get a matching dressing gown! What more could you ask for? Ok, so at just under £100 they're not exactly cheap but they are delectable. You can get a similar style in a myriad of other colours and fabrics there as well including in silk but I'm not sure if that's a little too Hugh Hefner (not that Hugh's look isn't great, it's just not what I'm talking about here).
John Lewis blue cotton pyjamas , £15
Marks and Spencer Cotton Rich Thin Stripe Pyjamas, £22
Marks even do a 'Big & Tall' version so there's no excuses for too-short PJ trousers.
After spouting all of this why do I still want to hide away and spend all winter living in footed pyjamas, shocking people with static?