what was their weight and length when they switched to that size? DS is 8 months old and is probably a little over 20 lbs but he's very long. I feel like his size 3s look like low rise bikini diapers. I'm due to buy diapers soon so I don't want to stock up on size 3s if he really needs the size 4s. We buy Huggies if that makes a difference. TIA.
Re: If your LO is in size 4 diapers...
If you go to pampers website, they have a diaper sizer tool. You put in age, height and weight and it will tell you what size they should be in. I am sure it can't vary too much between pampers and huggies.
Our DD is 23 lbs and 28.75 inches and in size 4. She has been in size 4 since she was like 21 lbs. I use the diaper sizer on the pampers website and of course when her diaper starts to look to low in the front.