Lululemon Size 0? Black Swiftly Tee Top Short Sleeve Crewneck Cropped

Condition: Pre-owned; missing original tearaway hang tag, and does not have size text inside. Has been worn a fair amount. No other issues. Size: My best guess is 0. Please check measurements below prior to purchase. Color: Black Design: Short sleeve cropped Swiftly tee. Materials: Unknown Measurements (approximate) Bust: 28" around Waist: 28" around Shoulder to Hem: 17.5" *PtT6