The invention refers to a bale forming system and to a bale forming method. A bale forming apparatus forms a round bale in a bale forming chamber. The formed bale is ejected out of the bale forming chamber and drops onto a bale carrier. The bale carrier with the bale is moved away from the bale forming apparatus. The bale on the bale carrier is positioned on a bale carrier bottom (31.l, 31.r, 3.1, 3.2, 3.3) and between two guiding sheets (26.l, 26.r, 52.l, 52.r). The guiding sheets (26.l, 26.r, 52.l, 52.r) can be folded together and unfolded such that their vertical dimensions are varied. The guiding sheets (26.l, 26.r, 52.l, 52.r) are unfolded when the bale carrier (2) is moved into the bale depositing position.