0-3 months
A 12-month-old typically wears size 12-18 months in baby clothes.
If baby clothes say 3 months on the label, you should buy the size that is meant for a baby who is 3 months old.
3-6 months
To determine the appropriate size for their baby when baby clothes are labeled as "3 months," parents can refer to the weight and height guidelines provided by the clothing brand or use a standard baby size chart. They can also consider their baby's current size and growth rate to make an informed decision.
2
When choosing clothes for your baby, consider their current size and growth rate. For a 6-month-old baby, it is recommended to buy 6-9 month size clothes to allow room for growth and ensure a comfortable fit.
There are not many places that sell plus size baby jeans. One place that sells plus size baby clothes is Bizrate an online store. Most commonly people have to buy a size up because baby clothes are made in sizes by month or year of age. This does not always factor in size of the child just the average size for that age.
6-month baby clothes are typically labeled as size 6-9 months, designed to fit babies who are around 6 to 9 months old.
If baby clothes say 6 months on the label, you should buy the size that is typically meant for babies who are around 6 months old.
When determining the appropriate baby clothes size for their newborn, parents should consider factors such as the baby's weight, height, and age, as well as the brand's sizing guidelines. It's important to choose clothes that are not too tight or too loose to ensure the baby's comfort and safety.
A newborn baby may vary in size and hence the dress size may differ. For small babies, the dress size would be "premature baby", for an average sized baby, it would be "newborn baby" and if the baby is slighter above average size, "0 to 3 months" is a good fit.
First, examine what size is your baby. Second, find suitable, comfortable clothes that won't irritate your baby.