4 month old kitten, in the last few days he's suddenly started kneading me with his paws and sucking on my clothes, but he kind of roots around too, it reminds me of a hungry (human) baby searching for the nipple, before he finds a satisfactory part of my jumper to suck on.
It's probably a nice/loving thing but my god it's annoying. I'm usually trying to do something else at the time, like my crochet etc and he just butts right in and won't be put off at all, it's usually right up on my chest too so he plonks his arse down right over my hands!