“As you can see, I have an arrow with diamonds on it,” said Cooper Koch, gesturing to the delicate brooch on his lapel — Boucheron ’s $22,800 18-karat white gold and diamond-encrusted creation. “It represents shooting for the stars and never giving up,” he added with a pause. “Right?”

It’s a sentiment in sync with the French jeweler’s new campaign: “Aim Forward.”

“Arrows going through my body. That’s the theme tonight,” smiled Charlotte Le Bon, sparkling in the same collection. The Canadian actress and director chose the $31,700 Flèche hoop earrings and $14,600 pendant, styled by Jonathan Huguet in a Jacquemus look.

Her earliest memory with Boucheron ? A proposal. “I proposed to a man, probably 15 years ago, and it was a Boucheron ring. So I went to Place Vendôme in Paris, bought a

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