Tonight, 14-year-old Millie Bobby Brown took the stage at the Nickelodeon Kids' Choice awards wearing custom Calvin Klein. But the actress, who appears in the label's newest campaign, wasn't wearing just any custom design: The Stranger Things star wore a jean jacket bearing the words "March for Our Lives" and the names of the 17 victims of the Parkland shooting.

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The front had the words "never again" stitched above a pocket.

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After the show, she posted a photo of her jacket on Instagram, thanking Calvin Klein for supporting her and championing this cause.

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Winning for Favorite TV Actress, Brown also used the opportunity to give an empowering speech, reminding the audience that she will be using her voice to "make a positive difference and help influence change." Watch her speech and read the full transcript below:

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Thank you so much for this award, and to Nickelodeon for bringing us all together. As we saw a moment ago, the March for Our Lives demonstrations that took place all over the world today have inspired me and impacted us all in one way or another. I'm fortunate to be here tonight to receive an award as an actor. I'm so very grateful, and I appreciate all the love and support of my fans, and the opportunity that our show, Stranger Things, has created for me.

But more than anything, I get to be up here, and I'm privileged to have a voice that can be heard, one that I can use to hopefully make a positive difference and help influence change. OK, so there's an amazing support, love and kindness in this room right now, and I want to encourage everyone to embrace it and to pass it on.

For the angels among us, your spirit lives on. This is for you.

From: Marie Claire US
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Sally Holmes
Editor in Chief

Sally is the Editor in Chief of Marie Claire where she oversees coverage of all the things the Marie Claire reader wants to know about, including politics, beauty, fashion, and celebs. She came to Marie Claire from ELLE.com, where she was the Executive Editor. Before that, Sally was at NYMag.com's the Cut and graduated with an English major from Boston College. Her favorite Harry Potter is 'Order of the Phoenix.'