The daughter of a Niarchos and a Guinness, Eugenie has had no problem making friends in all the chic places. But don't think she gets by on her heiress name alone; the stylish socialite is also a certified jewelry designer, launching her brand, Venyx, in 2013. Of course, when someone as cool as Eugenie turns the big 3-0, a quiet birthday bash just won't do. Over the weekend, some of her closest friends, including Derek Blasberg, Giovanna Battaglia, Margherita Missoni, and Sabine Getty, packed their bags and flew up to St. Moritz for a hippie-dippie alpine celebration as silly as it was swingin'. Click through for an inside look!
.jpg "How Comms Guru & Founder Of The PR Net Lisa Smith Put Her Stylish Stamp On The Industry")
.jpg "Who Are The Assoulines? Meet The Chic First Family Of Luxury Publishing")
.jpg "Who Is Nats Getty? The Oil Heir & Trans Activist Is Living Life Loud & Proud")
.jpg "Worldly Socialite Haya Maraka's Elegant Etiquette Tips For The Modern Lady")
.jpg "Haute Hostess Christine Chiu's Guide To Throwing The Most Fabulous Fête")
.jpg "How The Hamptons' Hottest Kicked Off Summer This Memorial Day Weekend")
