For finding the size guide for infants offered by Janie and Jack, you would typically want to check the official website. Janie and Jack provides detailed size charts that are essential for selecting the appropriate sizes for infants, ensuring a proper fit for their clothing. The size guide usually includes measurements for different age ranges and provides information on how to measure your child to find the right size. To locate the size guide, simply navigate to the specific infant clothing section on the Janie and Jack website. There is often a link to the size guide provided alongside the product descriptions. If you browse through their site, you should encounter the information you need to make informed purchasing decisions for your little one.