The princess, who is seventh in line for the British throne and the only royal living stateside, hit up the Dolce & Gabbana 19th Annual Artwalk NY Benefit Coalition for the Homeless on Tuesday.
"She looked totally relaxed mingling in the New York charity and art scene,” said an onlooker.
The princess, who is the daughter of Prince Andrew and Fergie (the Duke and Duchess of York), chatted with a handful of girlfriends and appeared to be without security according to the onlooker. She wore New York’s signature black and looked chic with her short shaggy auburn hair.
Other guests at the charity event included new parents Alec and Hilaria Baldwin, Jennifer Connolly and Carey Lowell, who recently split from husband Richard Gere.