Lululemon Sculpt II Tank

Lululemon gently used size 8 or 10 tank. I bought this on here from another user thinking it was a size 12 (because that’s what they advertised it as) but it is definitely a size or 2 smaller. Size tag is ripped out. I laid the shirt flat against the same tank in a size 12 for reference (see last photo.) I love love love this tank, but unfortunately it is too small on me. It is 17 inches across the bust.