Brand new with tag.
Size S.
Below are the details from the website.

Is Sailor Mars your favourite Guardian? Here she is showcased on her signature red decorated with stars and her guardians planetary symbol!

– Made from our super comfy Tee fabric
– Crew neck with short sleeves
– Around-the-knees length

Composition: 94% Polyester, 6% Elastane
Washing: Cold machine wash
Designed and made at BMHQ in Australia

Model size Aus 8 is wearing size XS
Height: 5' 7”