Hollywood hot spot The Trousdale has hosted the likes of Katy Perry, Leonardo DiCaprio and Christina Aguilera. At Jessica Alba's birthday bash, guests sipped the botanical-inspired Lady Trousdale cocktail. INGREDIENTS 3 oz. premium vodka 2 oz. St. Germain Elderflower liqueur 2 oz. passion fruit juice Splash of champagne DIRECTIONS Combine ingredients in a martini glass or flute and top off with champagne.