Montblanc 110th Anniversary Kate Bosworth Olivia Palermo - Lead 2016
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As a purveyor of luxury pens and leather goods, Montblanc has a distinct eye for quality design. So it's no huge surprise that every detail of the German brand's 110th anniversary gala dinner Tuesday night at the legendary Rainbow Room in N.Y.C. was well-thought-out, from the limited-edition timepieces on display to the tender slices of filet mignon elegantly served as the main course. The fancy party accoutrements, of course, demanded an equally fancy dress code. "I'm wearing their pearls," Kate Bosworth, in Dior, told InStyle, showing off her lobes, each accented with a stud from Montblanc's regal Bohème collection. "They make me feel like a youthful lady."

Montblanc 110th Anniversary Hugh Jackman - Embed 2016
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High above Midtown Manhattan on the 65th floor of 30 Rockefeller Plaza, fellow revelers Olivia Palermo, Johannes Huebl, and Hugh Jackman, among others, enjoyed expansive views to the north, east, and south as the sun set. Following the picture-perfect cocktail hour, where guests viewed a retrospective of Montblanc's most prized pieces, they shuffled into a sprawling dining room across the floor for dinner, where they conversed with each other about the merits of accessorizing. "I tend to take a minimalist approach," Bosworth added. "I think the power of restraint is underrated. When design is truly done well, it looks easy and effortless—there's just so much work going into that that you'll never see."

Montblanc 110th Anniversary - Embed 2016
Credit: Neilson Barnard/Getty Images

Palermo, on the other hand, was coveting the standout bag of the evening: a tall leather satchel emblazoned with a snake print design (above, left). "They're only making 100 of them, but I have to get one!" she joked. Jackman, a Montblanc ambassador, won't be fighting her for one. "I was always a pen man," he said. "It was the first semi-luxury item I ever got. I had terrible handwriting as a kid, and I used to get in trouble with all of my teachers for it. Then one day I complained to my dad that I just needed a proper pen. It actually didn't make that much of a difference in my handwriting, but I certainly enjoyed it a lot more." Maybe that's all that matters.