arf at matalan's finest! Found some more the next size up in the loft. They'll be no good for ds, but are perfect for dss (admittedly the one's I found that week were a little on the tight side, but not indecently so). He's sorted- almost. When the money's there I'll try and get another tank top, his wsa beginning to honk at yesterday.
No suggestions, Drew, maybe she's equally not keen! Maybe gently explain that it's his mum's house and her space, and that it'll happen when the time is right? In 6yo language 
Want to sahre more hadacakeful? you sound cheesed off.
we've managed to sort the latest clash- dss wants to help at his schools open evening, but it clashes with another school that dp and I are taking ds to. Dp's explained the situation and she's going to take dss and drop him back to ours. Dp is a very involved sp to ds, as his father is a useless alcoholic. Dss had the full focus (His mum and dad going round with him) last year, and it's ds' turn this year, so me and dp going round. We couldn't even take dss and drop him off on the way because dss chose a school near him mum's on the other side of town, and we're looking at one 15mins drive in the next small market town in the opposite direction.
I'm probably not making much sense. But sometimes dss' mum can be helpful, rational and reasonable, and this is one of them.