List of largest stars
These objects are extremely big, thousand to millions of times the volume  of our Sun, and extremely luminous. These stars also have extended atmospheres and  photospheres, and are often shrouded in dust (Like NML Cygni, WOH G64 , UY Scuti and VY Canis Majoris). This makes  their true size uncertain. Many of these stars vary in size and brightness (like Betelguese, Antares, Mu Cephei and VY Canis Majoris).