Joshua Jackson didn't seem to mind the Summer temperatures as he posed for photos in NYC on Sunday before putting on layered cardigans for last night's Fringe [1] premiere party with his costars. He looked great both ways, though Joshua is more than happy to let his girlfriend Diane Kruger take credit for his stellar style even when she's not by his side. He opened up to InStyle [2] about his newfound appreciation for clothes and his recent immersion in the world of high fashion. Here's more [3]:

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• On how Diane has affected his wardrobe: "When you're dating a European woman, the slovenly way of dressing will not do. But the reality is, I've also grown up a lot in the last five years, and not getting dressed up is partly teenage rebellion. I obviously held on to that for too long. But I don't want to get into wearing the uniform of the thirty-year-old actor either: the beanie guy, the scarf guy. It defeats the purpose of individual expression. If I ever have a fashion relapse, Diane lets me know."
• On awkward celebrity run-ins: "My first Cannes experience was my first true fashion moment. The tradition is that the director escorts his leading lady up the stairs — which left me dateless. So my 'date' for the evening became Karl Lagerfeld. There's little Canadian me sitting next to Karl Lagerfeld for four and a half hours. It was pretty comical."

For more of Joshua's thoughts on style, his childhood, and his new show Fringe [4], just .

• On when he started to care about clothes: "My education in the world of high fashion started with Diane. It's not something that particularly interested me before. That said, I don't think I'll ever rabidly follow trends. The big thing for me is finding clothes that I can wear, rather than clothes that wear me."
• On what style meant to him growing up in British Columbia: "My mother raised two children entirely by herself, which was spectacular of her. I didn't grow up in a house that catered to fashion. It was more about function."
• On returning to TV: "Frankly, Fringe is more to my taste than something like Dawson's Creek. I didn't grow up watching 90210; I grew up watching the X-Files."

We've always had a soft spot for Pacey Whitter, and we can't wait to see Josh back on the small screen in one of the most anticipated new Fall shows [5].

Ramey [6] and Source [7]