Pineapple Vanilla Pudding Cake

1 box yellow cake mix

1 can crushed pineapple (22 oz)

2 boxes instant vanilla pudding (4 servings)

3 cups milk

any flavor white icing

Prepare and bake cake according to directions on box for a 13x9 inch baking pan.  Pierce cake with fork at frequent intervals and top with pineapple and juice.  Prepare pudding according to directions using milk.  Spread on top of pineapple.  Top with a white icing.