Very nice fashion Knickers, I love the waist, great support and comfort. Made is USA, size is true size. I should warn that Chami in this model is very very thin so it would not give you much of comfort on long rides, but works fine for spinning class or short ride.
This is my second Decsente Tank Top, both of them are great and run true size, fit is extremely flattering and model is very comfortable! Bought together with the Sleeveless Top and enjoying it a lot. I would recommend for everybody, but if by some reasons you like loose fit for your biking wear, then you need to choose one size up.
I bought 2 of Castelli Prologo's - Black with Pink and Turquoise with White, size Small is true size, both of pieces are great fit and very flattering. Very breathable and dry quick, easy to take care of. Enjoying it a lot, received a lot of compliments and would recommend it to everybody who loves "good stuff". Go Castelli!