In the 14th century, clothing became more form fitting. As a result, we see more fastenings such as lacing or buttons.
Over hundreds of years, some things didn't change. A shirt was still worn next to the skin. It was usually made of linen, and was white or unbleached for ease of laundering.

Choose 100% linen for high authenticity, or linen cotton blend for affordability.
Yes, medieval underpants. Styles varied, just as they do today. These ones resemble modern boxer shorts, but without the elastic.

Choose 100% linen for high authenticity, or linen cotton blend for affordability.
Medieval men’s hose come in two main types: joined and separate. Separate hose pre-date joined hose, and consist of two separate legs, and were the common style in the 14th century.

Hose can be pointed (tied) onto your braies. Alternatively, they can be pointed to an arming belt or pourpoint.

This wool cotehardie was based on an extant 14th century garment, and it a great choice for your outfit.

For cold events or nights around the fire, this cloak is a great choice. It's inspired by a 14th century extant garment and is available in your choice of blue, red or green.

Finally, ensure you have a sturdy pair of boots, and you're ready for a 14th century adventure!