If you’re unsure of whether you need a slim Christmas tree or a pencil Christmas tree, slim trees are typically around 18ins (45cm) narrower at the base than the full-size trees. Pencil trees are then usually half the width of the slim trees. Therefore, choosing which type will depend on how much floor space you have and the look you want to create. Pencil trees may be more discreet due to the smaller circumference but can look just as stunning as a full size tree; simply dress with beautiful decorations to make it look truly opulent.