Sizing with mini clothes can be a tricky one as all babies & children grow at such different rates. Due to this we believe the term "true to size" doesn't really exist in children's clothing. We're aware that sizing differs greatly across brands & also that fit can be a personal preference as well. Generally we aim for our clothing to be closer to the bigger end of the size range to get the most out of your garments, but this doesn't always work out.
To give you the best idea of sizing we always give specific information for each style in the description. This will include measurements of the actual garment; which we recommend measuring against a similar well fitting garment you already have for best comparison. There will also be information if it is oversized or a smaller fit & we will supply the ages of the children in the images & the sizes they're wearing. If still unsure you're always welcome to shoot us an email or DM with any questions.
We are happy to exchange sizes too, just see our refund policy in FAQ for details.