Add the 3/4 cup mangoes and sugar in a blender.Blend till smooth,make a smooth puree.In a big bowl take whipped cream and 1/4 cup mango puree and mix it well.Keep aside.

Take serving glasses.Fill 1/4 glass with mango puree,tap it lightly. Take piping bag,fill with whipped cream. Now fill in glasses on mango puree,fill 1/4 glasses with mango whipped cream, top with chopped mango pieces.Refrigerate it and serve chilled.