Pour lemon juice in the bottom of a large mixing bowl.
Wash and core the apple. Chop it into bite sized pieces and add to the large bowl.
Peel and slice bananas and place in bowl. Toss bananas and apples in the lemon juice to coat and prevent browning.
Wash grapes, strawberries and blueberries. Add blueberries to bowl. Cut strawberries into bite sized pieces and place in bowl. If grapes are large, cut in half, otherwise add to the bowl.
Drain the pineapple, but reserve the juice. Add ¼ cup of pineapple juice and the pineapple bits to the bowl along with the drained oranges. Stir to combine.
Pour the sweetened condensed milk over the fruit and toss to coat. Add more pineapple juice if you want to thin out the dressing a bit.
Cover and chill until ready to serve.
