Measurements in photos.
Pit-to-pit ≈ 12.5–13 in
Band width ≈ ~11.5–12 in flat

I can't find the size dot, but it measures a 4 or 6. My typical size is 6, so my bet is it's a 6. That said, please see measurements before purchasing to confirm fit.

Lululemon Twist Bra Long Line in white. Older Lululemon style with twist front detail and T-strap back. Long line band allows it to be worn as a crop top or light-support yoga bra.

Features:
Twist front design
Long line band
T-strap back
Sweat-wicking stretch fabric
Light support