A measuring device for determining the bra size of a user, comprising a first band and a second band, characterised in that the measuring device further comprises: a panel which is separable into two panel parts (410, 420), wherein each band comprises first and second separable band parts (110, 210, 120, 220), each band part having a first end and a second end, wherein the first ends are attached to different parts of the panel and wherein attachment means are provided to releasably attach the second ends in overlapping relation to form a complete loop of variable length around the user's torso when the panel parts are connected; wherein the first band is provided with cup size indicia and the second band is provided with band size indicia; wherein the device has a pre-measurement configuration in which the panel parts (410, 420) are connected and the second ends (112, 122, 212, 222) of each respective band are separated such that the band parts extend from each panel part in opposing directions; wherein the device has a measurement configuration in which the second ends (112, 122, 212, 222) of each band are attached to form complete loops around the user's torso, the first band is configured to form a loop fitting around the user's bust and the second band is configured to form a loop above or below the user's bust fitting around the user's torso; and wherein the device has a post-measurement configuration in which the second ends (112, 122, 212, 222) of each band remain attached and the panel is separated into two parts (410, 420) such that the device can be removed from the user, and in which the second band is configured to indicate the user's band size on the band size indicia, and the first and second bands are employed to determine the user's cup size on the cup size indicia. a panel which is separable into two panel parts (410, 420), wherein each band comprises first and second separable band parts (110, 210, 120, 220), each band part having a first end and a second end, wherein the first ends are attached to different parts of the panel and wherein attachment means are provided to releasably attach the second ends in overlapping relation to form a complete loop of variable length around the user's torso when the panel parts are connected; wherein the first band is provided with cup size indicia and the second band is provided with band size indicia; wherein the device has a pre-measurement configuration in which the panel parts (410, 420) are connected and the second ends (112, 122, 212, 222) of each respective band are separated such that the band parts extend from each panel part in opposing directions; wherein the device has a measurement configuration in which the second ends (112, 122, 212, 222) of each band are attached to form complete loops around the user's torso, the first band is configured to form a loop fitting around the user's bust and the second band is configured to form a loop above or below the user's bust fitting around the user's torso; and wherein the device has a post-measurement configuration in which the second ends (112, 122, 212, 222) of each band remain attached and the panel is separated into two parts (410, 420) such that the device can be removed from the user, and in which the second band is configured to indicate the user's band size on the band size indicia, and the first and second bands are employed to determine the user's cup size on the cup size indicia.