In 1-cup glass measuring cup, microwave sugar and orange juice for 1 minute; stir.
In small bowl, using electric mixer at high speed, beat dried egg white powder and water until soft peaks form; gradually add sugar mixture in a thin stream. Continue beating at high speed until mixture is thick and glossy, about 4 minutes; scrape bowl occasionally.
In medium bowl, using same beaters at high speed, beat cream cheese, orange peel and vanilla until light and fluffy, about 5 minutes; scrape bowl occasionally.
Add 1/3 of egg white mixture to cream cheese mixture, beating at low speed, just until blended. Using a rubber spatula, gently fold in remaining egg white mixture until it is completely blended into cream cheese mixture.