My little girl is 8 weeks and we still have her in size 0 nappies (she was born early and small).
When do you know that they need to be moved up to the next size?
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My little boy is 7 weeks and in size 2 nappies and will be moving him to size 3 nappies fairly soon, he’s 11lb5oz. Usually the packaging of the nappies will say what weight range they are suitable for :) xx

My boy is 8 weeks and in size 1 :)
The packaging says the weight on it (e.g I use Tesco Fred & Flo which is 4lbs - 11lbs). My baby was 9lbs11 when he was weighed at 6 weeks so I don’t think we’ve got long left in size 1. I imagine it’s obvious with leaking or discomfort!

My LG is in the tesco Flo and Fred ones wearing size 1… she was weighed a few weeks ago at 10lb2 but they still fit great 👍🏻

I’ve just bought size 3 nappies for my 9 week old! I couldn’t believe it!

Thanks ladies!
Going to try her in size 1 x

My little girl is 8 weeks and we are just moving onto size 2 nappies now she’s only just 10lb 2oz now and we were debating the change over…we are using up our last lot of size 1s. You’ll notice if you have more leaks or if they seem tighter on their legs/round their tummy xx

My son is 9 weeks and size 0 is a perfect fit for him but he leaks out of them! He is on size 1 but they are too big but this brand still leak! Think he is in between sizes

The package says the weight
Also keep in mind that there is an overlap between sizes. I moved a size up when I noticed a lot of leaks
1
40
34
9

1
15
9

2
20