Looking for a simply elegant signature cocktail, love this the Tinsel Signature cocktail  from http://www.marieclaire.com/

Tinsel Bellini
2 oz. HPNOTIQ 
1 oz. limoncello
1 oz. Champagne
Splash of lime juice

Rim the Champagne flute with a light coat of sugar. Pour chilled HPNOTIQ, limoncello, and Champagne into the champagne flute. Add a splash of lime juice.