The second I saw Michelle Monaghan's new outfit, I immediately thought of Princess Diana. (Maybe it's because photos of Prince George's first day at boarding school were all over my Instagram feed today.) Tweed pencil skirts were a staple of the late princess's wardrobe, but lately, they seem to have been overshadowed by the floaty midi skirts and column maxis dominating the trend cycle.

Monaghan wore Ann Taylor's Collared Jacket in Tweed ($97) and matching Pocket A-Line Skirt in Tweed ($97) to the classic American brand's pre-NYFW event. It reminded me of Princess Diana's outfit from December 1995, when she visited the English National Ballet School in London. Both women even styled their brightly colored tweed skirts with simple black pointy-toe pumps. It's yet another example of the timelessness of Princess Diana's style—even 30 years later, her outfits remain fully relevant. Scroll down to see Michelle Monaghan's latest look, and shop her exact jacket and skirt while they're still in stock.

(Image credit: Getty Images)

On Michelle Monaghan: Ann Taylor Collared Jacket in Tweed ($97) and matching Pocket A-Line Skirt in Tweed ($97)

(Image credit: Backgrid)

(Image credit: Getty Images)Shop Michelle Monaghan's Exact Outfit

Ann Taylor Collared Jacket in Tweed

Ann Taylor Pocket A-Line Skirt in Tweed

Shop Tweed Pencil Skirts

Weekend Max Mara Wool Blend Boucle Short Skirt

Cinq à Sept Deva Birdseye Tweed Miniskirt

Ann Taylor Weekend Tweed A-Line Skirt

J.Crew Factory Wool-Blend A-Line Mini Skirt