Thanks girls, that's really helpful! I think DD's new summer wardrobe will be perfect then

With regards to the sleeping bags, DD has 2.5, 1.0 and 0.5 TOG bags. We generally use the 1.0 bags from late spring, summer nights and early autumn. The 0.5 tog is really thin, like a sheet, and I only use that on the super hot days. So I think I'll just take her 1.0 and 0.5 bags.

So the nights are pretty mild then? DD may just need a long sleeved onesie and a light bag? Or even short sleeved onesies?