Portable, collapsible child safety seat for use in a shopping cart

A portable, collapsible child safety seat for use within a shopping cart. The portable, collapsible child safety seat comprises a seat support frame member securable to an interior rear wall of the shopping cart wherein the seat support frame comprises a first L-shaped member and a second L-shaped member. The portable, collapsible child safety seat further comprises a collapsible seating member for suspending a child within the shopping cart, having a first longitudinal side coupled to the first L-shaped support frame member and a second longitudinal side coupled to the second L-shaped member and a rotatable horizontal support bar coupled to the seat support frame member wherein the horizontal support bar serves to maintain the seat support frame in a full extended position. Henceforth, existing shopping carts, having coupled thereto the portable, collapsible child safety seat of the present invention, are capable of accommodating two children. One child can be accommodated in the foldable compartment of the shopping cart and the other child can be accommodated in the portable, collapsible child safety seat of the present invention.