I have had to reorder bras from MyProtein before as the sizing has always been off (despite measuring my own bra size before buying the product!) It's always the underbust that's tight on me! Ordered a size up (from XS to S) as I knew my previous MP bra was way too small and suffocating (size XS), but this one was also suffocating around the lower bust. I've had to rewash the bra and it's getting less tight, but it's still not the best purchase. However, the quality of the fabric is lovely and it's great that this bra has straps for me to adjust.