Combine first 3 ingredients and chill for 3 hours.
20 minutes before serving, remove raspberry sherbet from freezer; leave at room temperature until ready to serve.
Just before serving, mix the raspberry sherbet with the chilled 7-Up beverage mixture.
Serve in sugar-rimmed glasses with citrus wedges or mint.
If the weather is warm, this can be served over cracked ice.
Submitted by: CM