1. Icing: 2. In a large bowl mix the Cool-Whip and sour cream together and blend well. 3. Cake: 4. Slice the cake into 3 layers. 5. Place one layer on your serving plate and put wax paper around the edge of the cake. 6. Put a good layer of the Cool-Whip on the layer 7. Slice 2 bananas around the top this. 8. Slice strawberries on top of the bananas. 9. Repeat with the next layer. 10. Place the last layer on top. 11. Icing the cake. 12. Decorate with strawberries. 13. Remove the wax paper 14. Refridgerate.