Let cream cheese stand at room temperature until soft (will soften quicker if cut into pieces).
In medium bowl, beat cream cheese (with beater) until light and fluffy, about 8 to 10 minutes. Beat in sweetened condensed milk, 1/4 of a can at a time. Add lemon juice and vanilla. Beat 1 minute. Pour filling into crust. Chill several hours. Top with cherry pie filling.