Reindeer pattern pyjamas (Llanishen CF14)

Set of cotton pyjamas with a reindeer pattern (see close-up pic), originally Tu Woman at Sainsbury's. The label says size 10 but they are a very small 10 - would suit someone with roughly a 26" waist. (The waist is elastic but it's not very forgiving.) Inside leg measurement roughly 27". Might be good for a small adult woman or a teenager?

Previously worn, obviously clean, definitely need an iron. Collect from Llanishen.