Celebrities attend The Serpentine Gallery Summer Party 2018. The who's who in the world of fashion and art gather for night of glamour at exclusive garden and gallery party. Pictured: Mary Charteris Ref: SPL5005018 200618 NON-EXCLUSIVE Picture by: Hewitt / SplashNews.com Splash News and Pictures Los Angeles: 310-821-2666 New York: 212-619-2666 London: 0207 644 7656 Milan: +39 02 4399 8577 photodesk@splashnews.com World Rights,, Image: 375454595, License: Rights-managed, Restrictions: -ALLCOUNTRY, Model Release: no, Credit line: Profimedia, Splash