The baby is born, the witch takes the girl, raises her and has her hair grow very long. When the girl is old enough, the witch locks her in a tower with no exit, and only a window. The only way to get in is by having the girl, Rapunzel, throw down her hair so that the witch can climb it.
One day, a prince comes by and sees the witch climbing the hair into the tower, and after the witch leaves, he calls out, "Rapunzel, Rapunzel, let down your hair." She lowers her hair, he climbs up, they have an epic love story -- until the witch finds out; however, this is after the prince got the girl pregnant.