leading edge high lift assembly for a wing comprising a main wing of an aircraft, comprising a high lift body, and a connection assembly configured for connecting the high lift body to the main wing in such a way that the high lift body is movable relative to the main wing between a stowed position and a deployed position, wherein the connection assembly comprises a first connection element that is mounted to the high lift body and that is configured to be movably mounted to the main wing, wherein the connection assembly comprises a second connection element that is mounted to the high lift body in a position spaced apart from the first connection element in a span direction, and that is configured to be movably mounted to the main wing, wherein the connection assembly comprises an additional support device arranged spaced apart from the first and second connection elements (19, 21) and configured to support the high lift body at the main wing against movement or deformation of the high lift body relative to the main wing, wherein the additional support device comprises a hold down device configured to support the high lift body at the main wing against upwards movement of the high lift body relative to the main wing when the high lift body is in the stowed position, the hold down device comprises a first stop element mounted to the high lift body and a second stop element configured to be mounted to the main wing, the first and second stop elements (39, 41) are configured to rest against one another when the high lift body is in the stowed position, and characterized in that the additional support device comprises a lateral support device configured to support the high lift body at the main wing against spanwise movement of the high lift body relative to the main wing when the high lift body is moved between the stowed position and the deployed position. a high lift body, and a connection assembly configured for connecting the high lift body to the main wing in such a way that the high lift body is movable relative to the main wing between a stowed position and a deployed position, wherein the connection assembly comprises a first connection element that is mounted to the high lift body and that is configured to be movably mounted to the main wing, wherein the connection assembly comprises a second connection element that is mounted to the high lift body in a position spaced apart from the first connection element in a span direction, and that is configured to be movably mounted to the main wing, wherein the connection assembly comprises an additional support device arranged spaced apart from the first and second connection elements (19, 21) and configured to support the high lift body at the main wing against movement or deformation of the high lift body relative to the main wing, wherein the additional support device comprises a hold down device configured to support the high lift body at the main wing against upwards movement of the high lift body relative to the main wing when the high lift body is in the stowed position, the hold down device comprises a first stop element mounted to the high lift body and a second stop element configured to be mounted to the main wing, the first and second stop elements (39, 41) are configured to rest against one another when the high lift body is in the stowed position, and characterized in that the additional support device comprises a lateral support device configured to support the high lift body at the main wing against spanwise movement of the high lift body relative to the main wing when the high lift body is moved between the stowed position and the deployed position.