Chill the champagne and orange juice in the refrigerator for at least an hour.

Take a champagne flute and pour champagne or sparkling wine into it, filling it about two-thirds of the way.

Slowly pour the freshly squeezed orange juice into the flute, filling the remaining one-third.

Gently stir the mixture with a long spoon to combine the flavors.

Optional: Garnish the glass with a slice of orange for an elegant presentation.