As long as you choose the right rise and waist settings and follow our fit tutorial shared at the bottom, a Bumpadum diaper will not look bulky. You can use any regular clothing that you use for your baby. Of course, you need to choose the right size diaper as per weight recommendations.
In case of babies < 6 months, the diapers may look slightly bulky, but will not affect any motor milestone of your baby such as turning over, sitting and standing. Younger babies naturally keep their legs apart at the thighs, and wearing cloth diapers is not going to affect your baby's growth in any way.
In anecdotal evidence from our customers, babies who have used our cloth diapers have either met or exceeded expectations in reaching all milestones.
Having said that, all cloth diapers will look slightly bulkier than disposables because we use layers of cloth to absorb liquid instead of chemicals.