Lululemon Love Tank Pima Cotton Pink Peony Would estimate a S/M No size please see measurements: Pit to pit is about 17 stretches to 23 Length is about 25 1. Lots of reasons to love this tank. Soft cotton fabric, just the right stretch, and a casual fit for every day of the week 2. Made with naturally breathable pima cotton fabric for the ultimate in softness and stretch 3. Added Lycra® fibre for stretch and shape retention 4. Classic fit, hip length Stylish lavender racerback tank top. Perfect for casual wear.