The brand is decking out the Icon Balcony Bar with an "abundance of flowers" between 15 and 29 May.
Guests will be served a trio of "summer garden" inspired cocktails as well as Laurent-Perrier Champagne. There will also be nibbles in the form of Joe and Seph's gourmet popcorn and sharing boards.
Tickets for the event cost £23. Last month the brand celebrated 50 years of its Cuvée Rosé with an event at Mondrian London hotel.