On Tuesday, December 27, she attended the show of French designer Stéphane Rolland, held at the historic Cirque d’Hiver Bouglione.

Onassis posed on the red carpet with a striking new dark brunette hair color and voluminous styling on top. She wore a black midi dress featuring an integrated cape, paired with matching heels.

The event had a charitable focus, with proceeds going for the third consecutive year to the Fondation des Hôpitaux, supporting at-risk teenagers. French First Lady and foundation president Brigitte Macron also attended the show.

Model Platon Papagiannopoulos, who has an international career, photographed with Onassis after the show. The smiling pair shared the moment on social media.

Onassis’ last public appearance was in July. The granddaughter of Aristotle Onassis, who reportedly splits her time between a small town in the Netherlands and Belgium, attended the famous Bal d’Été, curated by Sofia Coppola in Paris.

That appearance came just four months after her high-profile return following three years of absence, when she participated in a charitable art event organized by the Friends of the Pompidou Centre in France.