The present invention relates to an apparatus for sewing a label to a piece of fabric. The label is passed through a guiding channel until it is detected by a label sensor activating an air nozzle. The air stream ejected therefrom drives the label into a take-over station. The latter is constituted by two grippers arranged at a defined distance from each other and each consists of a lower and an upper gripper jaw clamping the edges of the label therebetween. Feed cylinders shift the grippers with the label held by them to the sewing site. The distance between the grippers can be varied with the aid of a threaded spindle assembly so that handling of labels of different sizes is possible.