A shirt-smoothing device includes a lower part and an inflatable body fixed thereon. Because the inflatable body must be at least the same size as the shirt to be smoothed, the device has considerable height, however, the rigid components in the area of the inflatable body are lowerable to handle the device more easily and, more particularly, to stow it away easily. An internally disposed supporting frame and a button strip tensioner disposed in front of the inflatable body can be lowered after use into the lower part, whereby the inflatable body, which is exclusively connected to the supporting frame at the top becomes folded. The same applies to flexible inflatable support bodied and support nets disposed between the inflatable body and the supporting frame. The storage space required for the shirt smoothing device can be substantially reduced by the invention and the handling and storage thereof simplified.