Mary-Kate and Ashley Olsen lead

Mary-Kate and Ashley Olsen Make Rare Joint Appearance on the Red Carpet

As they've made the transition from child stars into fashion insiders, Mary-Kate and Ashley Olsen have all but retreated from the spotlight, choosing to turn the focus away from their lives and personalities and onto their award-winning design endeavors instead. On Wednesday night, however, the duo made one of their very rare public appearances while supporting their friend Jonah Hill at WSJ Magazine's Innovator Awards at the Museum of Modern Art in New York City.

For the occasion, the sisters stuck to their trusty uniform of coordinating oversize black and white outfits. Ashley wore an ankle-length white skirt under a matching white long-sleeve tunic top, carried a slouchy black-leather purse, and sported a pair of black pointy-toe heels. Mary-Kate, meanwhile, opted for a pair of wide-leg black pants under a long black overcoat, carried her phone in her hand, and broke up the twins' monochrome moment with bright-red snakeskin boots and eye-catching coral earrings. Both sisters wore their long blonde hair down, in their signature middle-parted messy waves, and both stuck to minimal, glowy makeup looks.

At the event, according to People, the Olsen twins were seated at Hill's table. While theirs may seem like an unlikely friendship, the trio have actually been close for years. In the actor's speech on Wednesday, as he accepted the night's Film Award, he reportedly thanked the sisters for inspiring him as fellow innovators.

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Wednesday night's coordinating look was only the latest in the sisters' long history of alternating between black and white outfits for their occasional red-carpet appearances. Though this week was, apparently, Ashley's turn to wear white, she took on the role of the "dark twin" with aplomb at the 2017 CFDA Fashion Awards in New York City, when she wore a trailing black long-sleeve gown and Mary-Kate donned a crisp white button-down shirt over her own black skirt.

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Earlier that year, they swapped roles yet again: While attending a gala at N.Y.C.'s Lincoln Center in April 2017, Ashley wore an angelic white gown with puffy sleeves and a ruffly, textured skirt. Mary-Kate, meanwhile, sported a black tweed coat, buttoned up to her neck, that flowed all the way to the tops of her platform sandals.

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And only a few months before that, at the opening of their Elizabeth and James flagship store in Los Angeles in the summer of 2016, they returned yet again to their preferred color palette. For the rooftop party, Ashley wore a Mary-Kate–worthy coatdress, this time in a creamy ivory shade, and her twin wore a black slipdress under a silky black trenchcoat. Clearly, if it ain't broke, the Olsen twins will not be fixing it.

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Related: Mary-Kate and Ashley Olsen's Hair: Celebrating 31 Years of Highlights, Crimping, and Messy Waves